1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Driver for ESS Maestro 1/2/2E Sound Card (started 21.8.99)
4 * Copyright (c) by Matze Braun <MatzeBraun@gmx.de>.
5 * Takashi Iwai <tiwai@suse.de>
6 *
7 * Most of the driver code comes from Zach Brown(zab@redhat.com)
8 * Alan Cox OSS Driver
9 * Rewritted from card-es1938.c source.
10 *
11 * TODO:
12 * Perhaps Synth
13 *
14 * Notes from Zach Brown about the driver code
15 *
16 * Hardware Description
17 *
18 * A working Maestro setup contains the Maestro chip wired to a
19 * codec or 2. In the Maestro we have the APUs, the ASSP, and the
20 * Wavecache. The APUs can be though of as virtual audio routing
21 * channels. They can take data from a number of sources and perform
22 * basic encodings of the data. The wavecache is a storehouse for
23 * PCM data. Typically it deals with PCI and interracts with the
24 * APUs. The ASSP is a wacky DSP like device that ESS is loth
25 * to release docs on. Thankfully it isn't required on the Maestro
26 * until you start doing insane things like FM emulation and surround
27 * encoding. The codecs are almost always AC-97 compliant codecs,
28 * but it appears that early Maestros may have had PT101 (an ESS
29 * part?) wired to them. The only real difference in the Maestro
30 * families is external goop like docking capability, memory for
31 * the ASSP, and initialization differences.
32 *
33 * Driver Operation
34 *
35 * We only drive the APU/Wavecache as typical DACs and drive the
36 * mixers in the codecs. There are 64 APUs. We assign 6 to each
37 * /dev/dsp? device. 2 channels for output, and 4 channels for
38 * input.
39 *
40 * Each APU can do a number of things, but we only really use
41 * 3 basic functions. For playback we use them to convert PCM
42 * data fetched over PCI by the wavecahche into analog data that
43 * is handed to the codec. One APU for mono, and a pair for stereo.
44 * When in stereo, the combination of smarts in the APU and Wavecache
45 * decide which wavecache gets the left or right channel.
46 *
47 * For record we still use the old overly mono system. For each in
48 * coming channel the data comes in from the codec, through a 'input'
49 * APU, through another rate converter APU, and then into memory via
50 * the wavecache and PCI. If its stereo, we mash it back into LRLR in
51 * software. The pass between the 2 APUs is supposedly what requires us
52 * to have a 512 byte buffer sitting around in wavecache/memory.
53 *
54 * The wavecache makes our life even more fun. First off, it can
55 * only address the first 28 bits of PCI address space, making it
56 * useless on quite a few architectures. Secondly, its insane.
57 * It claims to fetch from 4 regions of PCI space, each 4 meg in length.
58 * But that doesn't really work. You can only use 1 region. So all our
59 * allocations have to be in 4meg of each other. Booo. Hiss.
60 * So we have a module parameter, dsps_order, that is the order of
61 * the number of dsps to provide. All their buffer space is allocated
62 * on open time. The sonicvibes OSS routines we inherited really want
63 * power of 2 buffers, so we have all those next to each other, then
64 * 512 byte regions for the recording wavecaches. This ends up
65 * wasting quite a bit of memory. The only fixes I can see would be
66 * getting a kernel allocator that could work in zones, or figuring out
67 * just how to coerce the WP into doing what we want.
68 *
69 * The indirection of the various registers means we have to spinlock
70 * nearly all register accesses. We have the main register indirection
71 * like the wave cache, maestro registers, etc. Then we have beasts
72 * like the APU interface that is indirect registers gotten at through
73 * the main maestro indirection. Ouch. We spinlock around the actual
74 * ports on a per card basis. This means spinlock activity at each IO
75 * operation, but the only IO operation clusters are in non critical
76 * paths and it makes the code far easier to follow. Interrupts are
77 * blocked while holding the locks because the int handler has to
78 * get at some of them :(. The mixer interface doesn't, however.
79 * We also have an OSS state lock that is thrown around in a few
80 * places.
81 */
82
83 #include <linux/io.h>
84 #include <linux/delay.h>
85 #include <linux/interrupt.h>
86 #include <linux/init.h>
87 #include <linux/pci.h>
88 #include <linux/dma-mapping.h>
89 #include <linux/slab.h>
90 #include <linux/gameport.h>
91 #include <linux/module.h>
92 #include <linux/mutex.h>
93 #include <linux/input.h>
94
95 #include <sound/core.h>
96 #include <sound/pcm.h>
97 #include <sound/mpu401.h>
98 #include <sound/ac97_codec.h>
99 #include <sound/initval.h>
100
101 #ifdef CONFIG_SND_ES1968_RADIO
102 #include <media/drv-intf/tea575x.h>
103 #endif
104
105 #define CARD_NAME "ESS Maestro1/2"
106 #define DRIVER_NAME "ES1968"
107
108 MODULE_DESCRIPTION("ESS Maestro");
109 MODULE_LICENSE("GPL");
110
111 #if IS_REACHABLE(CONFIG_GAMEPORT)
112 #define SUPPORT_JOYSTICK 1
113 #endif
114
115 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 1-MAX */
116 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
117 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
118 static int total_bufsize[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1024 };
119 static int pcm_substreams_p[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 4 };
120 static int pcm_substreams_c[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1 };
121 static int clock[SNDRV_CARDS];
122 static int use_pm[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};
123 static int enable_mpu[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};
124 #ifdef SUPPORT_JOYSTICK
125 static bool joystick[SNDRV_CARDS];
126 #endif
127 static int radio_nr[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -1};
128
129 module_param_array(index, int, NULL, 0444);
130 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
131 module_param_array(id, charp, NULL, 0444);
132 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
133 module_param_array(enable, bool, NULL, 0444);
134 MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
135 module_param_array(total_bufsize, int, NULL, 0444);
136 MODULE_PARM_DESC(total_bufsize, "Total buffer size in kB.");
137 module_param_array(pcm_substreams_p, int, NULL, 0444);
138 MODULE_PARM_DESC(pcm_substreams_p, "PCM Playback substreams for " CARD_NAME " soundcard.");
139 module_param_array(pcm_substreams_c, int, NULL, 0444);
140 MODULE_PARM_DESC(pcm_substreams_c, "PCM Capture substreams for " CARD_NAME " soundcard.");
141 module_param_array(clock, int, NULL, 0444);
142 MODULE_PARM_DESC(clock, "Clock on " CARD_NAME " soundcard. (0 = auto-detect)");
143 module_param_array(use_pm, int, NULL, 0444);
144 MODULE_PARM_DESC(use_pm, "Toggle power-management. (0 = off, 1 = on, 2 = auto)");
145 module_param_array(enable_mpu, int, NULL, 0444);
146 MODULE_PARM_DESC(enable_mpu, "Enable MPU401. (0 = off, 1 = on, 2 = auto)");
147 #ifdef SUPPORT_JOYSTICK
148 module_param_array(joystick, bool, NULL, 0444);
149 MODULE_PARM_DESC(joystick, "Enable joystick.");
150 #endif
151 module_param_array(radio_nr, int, NULL, 0444);
152 MODULE_PARM_DESC(radio_nr, "Radio device numbers");
153
154
155
156 #define NR_APUS 64
157 #define NR_APU_REGS 16
158
159 /* NEC Versas ? */
160 #define NEC_VERSA_SUBID1 0x80581033
161 #define NEC_VERSA_SUBID2 0x803c1033
162
163 /* Mode Flags */
164 #define ESS_FMT_STEREO 0x01
165 #define ESS_FMT_16BIT 0x02
166
167 #define DAC_RUNNING 1
168 #define ADC_RUNNING 2
169
170 /* Values for the ESM_LEGACY_AUDIO_CONTROL */
171
172 #define ESS_DISABLE_AUDIO 0x8000
173 #define ESS_ENABLE_SERIAL_IRQ 0x4000
174 #define IO_ADRESS_ALIAS 0x0020
175 #define MPU401_IRQ_ENABLE 0x0010
176 #define MPU401_IO_ENABLE 0x0008
177 #define GAME_IO_ENABLE 0x0004
178 #define FM_IO_ENABLE 0x0002
179 #define SB_IO_ENABLE 0x0001
180
181 /* Values for the ESM_CONFIG_A */
182
183 #define PIC_SNOOP1 0x4000
184 #define PIC_SNOOP2 0x2000
185 #define SAFEGUARD 0x0800
186 #define DMA_CLEAR 0x0700
187 #define DMA_DDMA 0x0000
188 #define DMA_TDMA 0x0100
189 #define DMA_PCPCI 0x0200
190 #define POST_WRITE 0x0080
191 #define PCI_TIMING 0x0040
192 #define SWAP_LR 0x0020
193 #define SUBTR_DECODE 0x0002
194
195 /* Values for the ESM_CONFIG_B */
196
197 #define SPDIF_CONFB 0x0100
198 #define HWV_CONFB 0x0080
199 #define DEBOUNCE 0x0040
200 #define GPIO_CONFB 0x0020
201 #define CHI_CONFB 0x0010
202 #define IDMA_CONFB 0x0008 /*undoc */
203 #define MIDI_FIX 0x0004 /*undoc */
204 #define IRQ_TO_ISA 0x0001 /*undoc */
205
206 /* Values for Ring Bus Control B */
207 #define RINGB_2CODEC_ID_MASK 0x0003
208 #define RINGB_DIS_VALIDATION 0x0008
209 #define RINGB_EN_SPDIF 0x0010
210 #define RINGB_EN_2CODEC 0x0020
211 #define RINGB_SING_BIT_DUAL 0x0040
212
213 /* ****Port Addresses**** */
214
215 /* Write & Read */
216 #define ESM_INDEX 0x02
217 #define ESM_DATA 0x00
218
219 /* AC97 + RingBus */
220 #define ESM_AC97_INDEX 0x30
221 #define ESM_AC97_DATA 0x32
222 #define ESM_RING_BUS_DEST 0x34
223 #define ESM_RING_BUS_CONTR_A 0x36
224 #define ESM_RING_BUS_CONTR_B 0x38
225 #define ESM_RING_BUS_SDO 0x3A
226
227 /* WaveCache*/
228 #define WC_INDEX 0x10
229 #define WC_DATA 0x12
230 #define WC_CONTROL 0x14
231
232 /* ASSP*/
233 #define ASSP_INDEX 0x80
234 #define ASSP_MEMORY 0x82
235 #define ASSP_DATA 0x84
236 #define ASSP_CONTROL_A 0xA2
237 #define ASSP_CONTROL_B 0xA4
238 #define ASSP_CONTROL_C 0xA6
239 #define ASSP_HOSTW_INDEX 0xA8
240 #define ASSP_HOSTW_DATA 0xAA
241 #define ASSP_HOSTW_IRQ 0xAC
242 /* Midi */
243 #define ESM_MPU401_PORT 0x98
244 /* Others */
245 #define ESM_PORT_HOST_IRQ 0x18
246
247 #define IDR0_DATA_PORT 0x00
248 #define IDR1_CRAM_POINTER 0x01
249 #define IDR2_CRAM_DATA 0x02
250 #define IDR3_WAVE_DATA 0x03
251 #define IDR4_WAVE_PTR_LOW 0x04
252 #define IDR5_WAVE_PTR_HI 0x05
253 #define IDR6_TIMER_CTRL 0x06
254 #define IDR7_WAVE_ROMRAM 0x07
255
256 #define WRITEABLE_MAP 0xEFFFFF
257 #define READABLE_MAP 0x64003F
258
259 /* PCI Register */
260
261 #define ESM_LEGACY_AUDIO_CONTROL 0x40
262 #define ESM_ACPI_COMMAND 0x54
263 #define ESM_CONFIG_A 0x50
264 #define ESM_CONFIG_B 0x52
265 #define ESM_DDMA 0x60
266
267 /* Bob Bits */
268 #define ESM_BOB_ENABLE 0x0001
269 #define ESM_BOB_START 0x0001
270
271 /* Host IRQ Control Bits */
272 #define ESM_RESET_MAESTRO 0x8000
273 #define ESM_RESET_DIRECTSOUND 0x4000
274 #define ESM_HIRQ_ClkRun 0x0100
275 #define ESM_HIRQ_HW_VOLUME 0x0040
276 #define ESM_HIRQ_HARPO 0x0030 /* What's that? */
277 #define ESM_HIRQ_ASSP 0x0010
278 #define ESM_HIRQ_DSIE 0x0004
279 #define ESM_HIRQ_MPU401 0x0002
280 #define ESM_HIRQ_SB 0x0001
281
282 /* Host IRQ Status Bits */
283 #define ESM_MPU401_IRQ 0x02
284 #define ESM_SB_IRQ 0x01
285 #define ESM_SOUND_IRQ 0x04
286 #define ESM_ASSP_IRQ 0x10
287 #define ESM_HWVOL_IRQ 0x40
288
289 #define ESS_SYSCLK 50000000
290 #define ESM_BOB_FREQ 200
291 #define ESM_BOB_FREQ_MAX 800
292
293 #define ESM_FREQ_ESM1 (49152000L / 1024L) /* default rate 48000 */
294 #define ESM_FREQ_ESM2 (50000000L / 1024L)
295
296 /* APU Modes: reg 0x00, bit 4-7 */
297 #define ESM_APU_MODE_SHIFT 4
298 #define ESM_APU_MODE_MASK (0xf << 4)
299 #define ESM_APU_OFF 0x00
300 #define ESM_APU_16BITLINEAR 0x01 /* 16-Bit Linear Sample Player */
301 #define ESM_APU_16BITSTEREO 0x02 /* 16-Bit Stereo Sample Player */
302 #define ESM_APU_8BITLINEAR 0x03 /* 8-Bit Linear Sample Player */
303 #define ESM_APU_8BITSTEREO 0x04 /* 8-Bit Stereo Sample Player */
304 #define ESM_APU_8BITDIFF 0x05 /* 8-Bit Differential Sample Playrer */
305 #define ESM_APU_DIGITALDELAY 0x06 /* Digital Delay Line */
306 #define ESM_APU_DUALTAP 0x07 /* Dual Tap Reader */
307 #define ESM_APU_CORRELATOR 0x08 /* Correlator */
308 #define ESM_APU_INPUTMIXER 0x09 /* Input Mixer */
309 #define ESM_APU_WAVETABLE 0x0A /* Wave Table Mode */
310 #define ESM_APU_SRCONVERTOR 0x0B /* Sample Rate Convertor */
311 #define ESM_APU_16BITPINGPONG 0x0C /* 16-Bit Ping-Pong Sample Player */
312 #define ESM_APU_RESERVED1 0x0D /* Reserved 1 */
313 #define ESM_APU_RESERVED2 0x0E /* Reserved 2 */
314 #define ESM_APU_RESERVED3 0x0F /* Reserved 3 */
315
316 /* reg 0x00 */
317 #define ESM_APU_FILTER_Q_SHIFT 0
318 #define ESM_APU_FILTER_Q_MASK (3 << 0)
319 /* APU Filtey Q Control */
320 #define ESM_APU_FILTER_LESSQ 0x00
321 #define ESM_APU_FILTER_MOREQ 0x03
322
323 #define ESM_APU_FILTER_TYPE_SHIFT 2
324 #define ESM_APU_FILTER_TYPE_MASK (3 << 2)
325 #define ESM_APU_ENV_TYPE_SHIFT 8
326 #define ESM_APU_ENV_TYPE_MASK (3 << 8)
327 #define ESM_APU_ENV_STATE_SHIFT 10
328 #define ESM_APU_ENV_STATE_MASK (3 << 10)
329 #define ESM_APU_END_CURVE (1 << 12)
330 #define ESM_APU_INT_ON_LOOP (1 << 13)
331 #define ESM_APU_DMA_ENABLE (1 << 14)
332
333 /* reg 0x02 */
334 #define ESM_APU_SUBMIX_GROUP_SHIRT 0
335 #define ESM_APU_SUBMIX_GROUP_MASK (7 << 0)
336 #define ESM_APU_SUBMIX_MODE (1 << 3)
337 #define ESM_APU_6dB (1 << 4)
338 #define ESM_APU_DUAL_EFFECT (1 << 5)
339 #define ESM_APU_EFFECT_CHANNELS_SHIFT 6
340 #define ESM_APU_EFFECT_CHANNELS_MASK (3 << 6)
341
342 /* reg 0x03 */
343 #define ESM_APU_STEP_SIZE_MASK 0x0fff
344
345 /* reg 0x04 */
346 #define ESM_APU_PHASE_SHIFT 0
347 #define ESM_APU_PHASE_MASK (0xff << 0)
348 #define ESM_APU_WAVE64K_PAGE_SHIFT 8 /* most 8bit of wave start offset */
349 #define ESM_APU_WAVE64K_PAGE_MASK (0xff << 8)
350
351 /* reg 0x05 - wave start offset */
352 /* reg 0x06 - wave end offset */
353 /* reg 0x07 - wave loop length */
354
355 /* reg 0x08 */
356 #define ESM_APU_EFFECT_GAIN_SHIFT 0
357 #define ESM_APU_EFFECT_GAIN_MASK (0xff << 0)
358 #define ESM_APU_TREMOLO_DEPTH_SHIFT 8
359 #define ESM_APU_TREMOLO_DEPTH_MASK (0xf << 8)
360 #define ESM_APU_TREMOLO_RATE_SHIFT 12
361 #define ESM_APU_TREMOLO_RATE_MASK (0xf << 12)
362
363 /* reg 0x09 */
364 /* bit 0-7 amplitude dest? */
365 #define ESM_APU_AMPLITUDE_NOW_SHIFT 8
366 #define ESM_APU_AMPLITUDE_NOW_MASK (0xff << 8)
367
368 /* reg 0x0a */
369 #define ESM_APU_POLAR_PAN_SHIFT 0
370 #define ESM_APU_POLAR_PAN_MASK (0x3f << 0)
371 /* Polar Pan Control */
372 #define ESM_APU_PAN_CENTER_CIRCLE 0x00
373 #define ESM_APU_PAN_MIDDLE_RADIUS 0x01
374 #define ESM_APU_PAN_OUTSIDE_RADIUS 0x02
375
376 #define ESM_APU_FILTER_TUNING_SHIFT 8
377 #define ESM_APU_FILTER_TUNING_MASK (0xff << 8)
378
379 /* reg 0x0b */
380 #define ESM_APU_DATA_SRC_A_SHIFT 0
381 #define ESM_APU_DATA_SRC_A_MASK (0x7f << 0)
382 #define ESM_APU_INV_POL_A (1 << 7)
383 #define ESM_APU_DATA_SRC_B_SHIFT 8
384 #define ESM_APU_DATA_SRC_B_MASK (0x7f << 8)
385 #define ESM_APU_INV_POL_B (1 << 15)
386
387 #define ESM_APU_VIBRATO_RATE_SHIFT 0
388 #define ESM_APU_VIBRATO_RATE_MASK (0xf << 0)
389 #define ESM_APU_VIBRATO_DEPTH_SHIFT 4
390 #define ESM_APU_VIBRATO_DEPTH_MASK (0xf << 4)
391 #define ESM_APU_VIBRATO_PHASE_SHIFT 8
392 #define ESM_APU_VIBRATO_PHASE_MASK (0xff << 8)
393
394 /* reg 0x0c */
395 #define ESM_APU_RADIUS_SELECT (1 << 6)
396
397 /* APU Filter Control */
398 #define ESM_APU_FILTER_2POLE_LOPASS 0x00
399 #define ESM_APU_FILTER_2POLE_BANDPASS 0x01
400 #define ESM_APU_FILTER_2POLE_HIPASS 0x02
401 #define ESM_APU_FILTER_1POLE_LOPASS 0x03
402 #define ESM_APU_FILTER_1POLE_HIPASS 0x04
403 #define ESM_APU_FILTER_OFF 0x05
404
405 /* APU ATFP Type */
406 #define ESM_APU_ATFP_AMPLITUDE 0x00
407 #define ESM_APU_ATFP_TREMELO 0x01
408 #define ESM_APU_ATFP_FILTER 0x02
409 #define ESM_APU_ATFP_PAN 0x03
410
411 /* APU ATFP Flags */
412 #define ESM_APU_ATFP_FLG_OFF 0x00
413 #define ESM_APU_ATFP_FLG_WAIT 0x01
414 #define ESM_APU_ATFP_FLG_DONE 0x02
415 #define ESM_APU_ATFP_FLG_INPROCESS 0x03
416
417
418 /* capture mixing buffer size */
419 #define ESM_MEM_ALIGN 0x1000
420 #define ESM_MIXBUF_SIZE 0x400
421
422 #define ESM_MODE_PLAY 0
423 #define ESM_MODE_CAPTURE 1
424
425
426 /* APU use in the driver */
427 enum snd_enum_apu_type {
428 ESM_APU_PCM_PLAY,
429 ESM_APU_PCM_CAPTURE,
430 ESM_APU_PCM_RATECONV,
431 ESM_APU_FREE
432 };
433
434 /* chip type */
435 enum {
436 TYPE_MAESTRO, TYPE_MAESTRO2, TYPE_MAESTRO2E
437 };
438
439 /* DMA Hack! */
440 struct esm_memory {
441 struct snd_dma_buffer buf;
442 int empty; /* status */
443 struct list_head list;
444 };
445
446 /* Playback Channel */
447 struct esschan {
448 int running;
449
450 u8 apu[4];
451 u8 apu_mode[4];
452
453 /* playback/capture pcm buffer */
454 struct esm_memory *memory;
455 /* capture mixer buffer */
456 struct esm_memory *mixbuf;
457
458 unsigned int hwptr; /* current hw pointer in bytes */
459 unsigned int count; /* sample counter in bytes */
460 unsigned int dma_size; /* total buffer size in bytes */
461 unsigned int frag_size; /* period size in bytes */
462 unsigned int wav_shift;
463 u16 base[4]; /* offset for ptr */
464
465 /* stereo/16bit flag */
466 unsigned char fmt;
467 int mode; /* playback / capture */
468
469 int bob_freq; /* required timer frequency */
470
471 struct snd_pcm_substream *substream;
472
473 /* linked list */
474 struct list_head list;
475
476 u16 wc_map[4];
477 };
478
479 struct es1968 {
480 /* Module Config */
481 int total_bufsize; /* in bytes */
482
483 int playback_streams, capture_streams;
484
485 unsigned int clock; /* clock */
486 /* for clock measurement */
487 unsigned int in_measurement: 1;
488 unsigned int measure_apu;
489 unsigned int measure_lastpos;
490 unsigned int measure_count;
491
492 /* buffer */
493 struct snd_dma_buffer dma;
494
495 /* Resources... */
496 int irq;
497 unsigned long io_port;
498 int type;
499 struct pci_dev *pci;
500 struct snd_card *card;
501 struct snd_pcm *pcm;
502 int do_pm; /* power-management enabled */
503
504 /* DMA memory block */
505 struct list_head buf_list;
506
507 /* ALSA Stuff */
508 struct snd_ac97 *ac97;
509 struct snd_rawmidi *rmidi;
510
511 spinlock_t reg_lock;
512 unsigned int in_suspend;
513
514 /* Maestro Stuff */
515 u16 maestro_map[32];
516 int bobclient; /* active timer instancs */
517 int bob_freq; /* timer frequency */
518 struct mutex memory_mutex; /* memory lock */
519
520 /* APU states */
521 unsigned char apu[NR_APUS];
522
523 /* active substreams */
524 struct list_head substream_list;
525 spinlock_t substream_lock;
526
527 u16 apu_map[NR_APUS][NR_APU_REGS];
528
529 #ifdef SUPPORT_JOYSTICK
530 struct gameport *gameport;
531 #endif
532
533 #ifdef CONFIG_SND_ES1968_INPUT
534 struct input_dev *input_dev;
535 char phys[64]; /* physical device path */
536 #else
537 struct snd_kcontrol *master_switch; /* for h/w volume control */
538 struct snd_kcontrol *master_volume;
539 #endif
540 struct work_struct hwvol_work;
541
542 #ifdef CONFIG_SND_ES1968_RADIO
543 struct v4l2_device v4l2_dev;
544 struct snd_tea575x tea;
545 unsigned int tea575x_tuner;
546 #endif
547 };
548
549 static irqreturn_t snd_es1968_interrupt(int irq, void *dev_id);
550
551 static const struct pci_device_id snd_es1968_ids[] = {
552 /* Maestro 1 */
553 { 0x1285, 0x0100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, TYPE_MAESTRO },
554 /* Maestro 2 */
555 { 0x125d, 0x1968, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, TYPE_MAESTRO2 },
556 /* Maestro 2E */
557 { 0x125d, 0x1978, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, TYPE_MAESTRO2E },
558 { 0, }
559 };
560
561 MODULE_DEVICE_TABLE(pci, snd_es1968_ids);
562
563 /* *********************
564 * Low Level Funcs! *
565 *********************/
566
567 /* no spinlock */
568 static void __maestro_write(struct es1968 *chip, u16 reg, u16 data)
569 {
570 outw(reg, chip->io_port + ESM_INDEX);
571 outw(data, chip->io_port + ESM_DATA);
572 chip->maestro_map[reg] = data;
573 }
574
575 static inline void maestro_write(struct es1968 *chip, u16 reg, u16 data)
576 {
577 unsigned long flags;
578 spin_lock_irqsave(&chip->reg_lock, flags);
579 __maestro_write(chip, reg, data);
580 spin_unlock_irqrestore(&chip->reg_lock, flags);
581 }
582
583 /* no spinlock */
584 static u16 __maestro_read(struct es1968 *chip, u16 reg)
585 {
586 if (READABLE_MAP & (1 << reg)) {
587 outw(reg, chip->io_port + ESM_INDEX);
588 chip->maestro_map[reg] = inw(chip->io_port + ESM_DATA);
589 }
590 return chip->maestro_map[reg];
591 }
592
593 static inline u16 maestro_read(struct es1968 *chip, u16 reg)
594 {
595 unsigned long flags;
596 u16 result;
597 spin_lock_irqsave(&chip->reg_lock, flags);
598 result = __maestro_read(chip, reg);
599 spin_unlock_irqrestore(&chip->reg_lock, flags);
600 return result;
601 }
602
603 /* Wait for the codec bus to be free */
604 static int snd_es1968_ac97_wait(struct es1968 *chip)
605 {
606 int timeout = 100000;
607
608 while (timeout-- > 0) {
609 if (!(inb(chip->io_port + ESM_AC97_INDEX) & 1))
610 return 0;
611 cond_resched();
612 }
613 dev_dbg(chip->card->dev, "ac97 timeout\n");
614 return 1; /* timeout */
615 }
616
617 static int snd_es1968_ac97_wait_poll(struct es1968 *chip)
618 {
619 int timeout = 100000;
620
621 while (timeout-- > 0) {
622 if (!(inb(chip->io_port + ESM_AC97_INDEX) & 1))
623 return 0;
624 }
625 dev_dbg(chip->card->dev, "ac97 timeout\n");
626 return 1; /* timeout */
627 }
628
629 static void snd_es1968_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short val)
630 {
631 struct es1968 *chip = ac97->private_data;
632
633 snd_es1968_ac97_wait(chip);
634
635 /* Write the bus */
636 outw(val, chip->io_port + ESM_AC97_DATA);
637 /*msleep(1);*/
638 outb(reg, chip->io_port + ESM_AC97_INDEX);
639 /*msleep(1);*/
640 }
641
642 static unsigned short snd_es1968_ac97_read(struct snd_ac97 *ac97, unsigned short reg)
643 {
644 u16 data = 0;
645 struct es1968 *chip = ac97->private_data;
646
647 snd_es1968_ac97_wait(chip);
648
649 outb(reg | 0x80, chip->io_port + ESM_AC97_INDEX);
650 /*msleep(1);*/
651
652 if (!snd_es1968_ac97_wait_poll(chip)) {
653 data = inw(chip->io_port + ESM_AC97_DATA);
654 /*msleep(1);*/
655 }
656
657 return data;
658 }
659
660 /* no spinlock */
661 static void apu_index_set(struct es1968 *chip, u16 index)
662 {
663 int i;
664 __maestro_write(chip, IDR1_CRAM_POINTER, index);
665 for (i = 0; i < 1000; i++)
666 if (__maestro_read(chip, IDR1_CRAM_POINTER) == index)
667 return;
668 dev_dbg(chip->card->dev, "APU register select failed. (Timeout)\n");
669 }
670
671 /* no spinlock */
672 static void apu_data_set(struct es1968 *chip, u16 data)
673 {
674 int i;
675 for (i = 0; i < 1000; i++) {
676 if (__maestro_read(chip, IDR0_DATA_PORT) == data)
677 return;
678 __maestro_write(chip, IDR0_DATA_PORT, data);
679 }
680 dev_dbg(chip->card->dev, "APU register set probably failed (Timeout)!\n");
681 }
682
683 /* no spinlock */
684 static void __apu_set_register(struct es1968 *chip, u16 channel, u8 reg, u16 data)
685 {
686 if (snd_BUG_ON(channel >= NR_APUS))
687 return;
688 chip->apu_map[channel][reg] = data;
689 reg |= (channel << 4);
690 apu_index_set(chip, reg);
691 apu_data_set(chip, data);
692 }
693
694 static void apu_set_register(struct es1968 *chip, u16 channel, u8 reg, u16 data)
695 {
696 unsigned long flags;
697 spin_lock_irqsave(&chip->reg_lock, flags);
698 __apu_set_register(chip, channel, reg, data);
699 spin_unlock_irqrestore(&chip->reg_lock, flags);
700 }
701
702 static u16 __apu_get_register(struct es1968 *chip, u16 channel, u8 reg)
703 {
704 if (snd_BUG_ON(channel >= NR_APUS))
705 return 0;
706 reg |= (channel << 4);
707 apu_index_set(chip, reg);
708 return __maestro_read(chip, IDR0_DATA_PORT);
709 }
710
711 static u16 apu_get_register(struct es1968 *chip, u16 channel, u8 reg)
712 {
713 unsigned long flags;
714 u16 v;
715 spin_lock_irqsave(&chip->reg_lock, flags);
716 v = __apu_get_register(chip, channel, reg);
717 spin_unlock_irqrestore(&chip->reg_lock, flags);
718 return v;
719 }
720
721 #if 0 /* ASSP is not supported */
722
723 static void assp_set_register(struct es1968 *chip, u32 reg, u32 value)
724 {
725 unsigned long flags;
726
727 spin_lock_irqsave(&chip->reg_lock, flags);
728 outl(reg, chip->io_port + ASSP_INDEX);
729 outl(value, chip->io_port + ASSP_DATA);
730 spin_unlock_irqrestore(&chip->reg_lock, flags);
731 }
732
733 static u32 assp_get_register(struct es1968 *chip, u32 reg)
734 {
735 unsigned long flags;
736 u32 value;
737
738 spin_lock_irqsave(&chip->reg_lock, flags);
739 outl(reg, chip->io_port + ASSP_INDEX);
740 value = inl(chip->io_port + ASSP_DATA);
741 spin_unlock_irqrestore(&chip->reg_lock, flags);
742
743 return value;
744 }
745
746 #endif
747
748 static void wave_set_register(struct es1968 *chip, u16 reg, u16 value)
749 {
750 unsigned long flags;
751
752 spin_lock_irqsave(&chip->reg_lock, flags);
753 outw(reg, chip->io_port + WC_INDEX);
754 outw(value, chip->io_port + WC_DATA);
755 spin_unlock_irqrestore(&chip->reg_lock, flags);
756 }
757
758 static u16 wave_get_register(struct es1968 *chip, u16 reg)
759 {
760 unsigned long flags;
761 u16 value;
762
763 spin_lock_irqsave(&chip->reg_lock, flags);
764 outw(reg, chip->io_port + WC_INDEX);
765 value = inw(chip->io_port + WC_DATA);
766 spin_unlock_irqrestore(&chip->reg_lock, flags);
767
768 return value;
769 }
770
771 /* *******************
772 * Bob the Timer! *
773 *******************/
774
775 static void snd_es1968_bob_stop(struct es1968 *chip)
776 {
777 u16 reg;
778
779 reg = __maestro_read(chip, 0x11);
780 reg &= ~ESM_BOB_ENABLE;
781 __maestro_write(chip, 0x11, reg);
782 reg = __maestro_read(chip, 0x17);
783 reg &= ~ESM_BOB_START;
784 __maestro_write(chip, 0x17, reg);
785 }
786
787 static void snd_es1968_bob_start(struct es1968 *chip)
788 {
789 int prescale;
790 int divide;
791
792 /* compute ideal interrupt frequency for buffer size & play rate */
793 /* first, find best prescaler value to match freq */
794 for (prescale = 5; prescale < 12; prescale++)
795 if (chip->bob_freq > (ESS_SYSCLK >> (prescale + 9)))
796 break;
797
798 /* next, back off prescaler whilst getting divider into optimum range */
799 divide = 1;
800 while ((prescale > 5) && (divide < 32)) {
801 prescale--;
802 divide <<= 1;
803 }
804 divide >>= 1;
805
806 /* now fine-tune the divider for best match */
807 for (; divide < 31; divide++)
808 if (chip->bob_freq >
809 ((ESS_SYSCLK >> (prescale + 9)) / (divide + 1))) break;
810
811 /* divide = 0 is illegal, but don't let prescale = 4! */
812 if (divide == 0) {
813 divide++;
814 if (prescale > 5)
815 prescale--;
816 } else if (divide > 1)
817 divide--;
818
819 __maestro_write(chip, 6, 0x9000 | (prescale << 5) | divide); /* set reg */
820
821 /* Now set IDR 11/17 */
822 __maestro_write(chip, 0x11, __maestro_read(chip, 0x11) | 1);
823 __maestro_write(chip, 0x17, __maestro_read(chip, 0x17) | 1);
824 }
825
826 /* call with substream spinlock */
827 static void snd_es1968_bob_inc(struct es1968 *chip, int freq)
828 {
829 chip->bobclient++;
830 if (chip->bobclient == 1) {
831 chip->bob_freq = freq;
832 snd_es1968_bob_start(chip);
833 } else if (chip->bob_freq < freq) {
834 snd_es1968_bob_stop(chip);
835 chip->bob_freq = freq;
836 snd_es1968_bob_start(chip);
837 }
838 }
839
840 /* call with substream spinlock */
841 static void snd_es1968_bob_dec(struct es1968 *chip)
842 {
843 chip->bobclient--;
844 if (chip->bobclient <= 0)
845 snd_es1968_bob_stop(chip);
846 else if (chip->bob_freq > ESM_BOB_FREQ) {
847 /* check reduction of timer frequency */
848 int max_freq = ESM_BOB_FREQ;
849 struct esschan *es;
850 list_for_each_entry(es, &chip->substream_list, list) {
851 if (max_freq < es->bob_freq)
852 max_freq = es->bob_freq;
853 }
854 if (max_freq != chip->bob_freq) {
855 snd_es1968_bob_stop(chip);
856 chip->bob_freq = max_freq;
857 snd_es1968_bob_start(chip);
858 }
859 }
860 }
861
862 static int
863 snd_es1968_calc_bob_rate(struct es1968 *chip, struct esschan *es,
864 struct snd_pcm_runtime *runtime)
865 {
866 /* we acquire 4 interrupts per period for precise control.. */
867 int freq = runtime->rate * 4;
868 if (es->fmt & ESS_FMT_STEREO)
869 freq <<= 1;
870 if (es->fmt & ESS_FMT_16BIT)
871 freq <<= 1;
872 freq /= es->frag_size;
873 if (freq < ESM_BOB_FREQ)
874 freq = ESM_BOB_FREQ;
875 else if (freq > ESM_BOB_FREQ_MAX)
876 freq = ESM_BOB_FREQ_MAX;
877 return freq;
878 }
879
880
881 /*************
882 * PCM Part *
883 *************/
884
885 static u32 snd_es1968_compute_rate(struct es1968 *chip, u32 freq)
886 {
887 u32 rate = (freq << 16) / chip->clock;
888 #if 0 /* XXX: do we need this? */
889 if (rate > 0x10000)
890 rate = 0x10000;
891 #endif
892 return rate;
893 }
894
895 /* get current pointer */
896 static inline unsigned int
897 snd_es1968_get_dma_ptr(struct es1968 *chip, struct esschan *es)
898 {
899 unsigned int offset;
900
901 offset = apu_get_register(chip, es->apu[0], 5);
902
903 offset -= es->base[0];
904
905 return (offset & 0xFFFE); /* hardware is in words */
906 }
907
908 static void snd_es1968_apu_set_freq(struct es1968 *chip, int apu, int freq)
909 {
910 apu_set_register(chip, apu, 2,
911 (apu_get_register(chip, apu, 2) & 0x00FF) |
912 ((freq & 0xff) << 8) | 0x10);
913 apu_set_register(chip, apu, 3, freq >> 8);
914 }
915
916 /* spin lock held */
917 static inline void snd_es1968_trigger_apu(struct es1968 *esm, int apu, int mode)
918 {
919 /* set the APU mode */
920 __apu_set_register(esm, apu, 0,
921 (__apu_get_register(esm, apu, 0) & 0xff0f) |
922 (mode << 4));
923 }
924
925 static void snd_es1968_pcm_start(struct es1968 *chip, struct esschan *es)
926 {
927 spin_lock(&chip->reg_lock);
928 __apu_set_register(chip, es->apu[0], 5, es->base[0]);
929 snd_es1968_trigger_apu(chip, es->apu[0], es->apu_mode[0]);
930 if (es->mode == ESM_MODE_CAPTURE) {
931 __apu_set_register(chip, es->apu[2], 5, es->base[2]);
932 snd_es1968_trigger_apu(chip, es->apu[2], es->apu_mode[2]);
933 }
934 if (es->fmt & ESS_FMT_STEREO) {
935 __apu_set_register(chip, es->apu[1], 5, es->base[1]);
936 snd_es1968_trigger_apu(chip, es->apu[1], es->apu_mode[1]);
937 if (es->mode == ESM_MODE_CAPTURE) {
938 __apu_set_register(chip, es->apu[3], 5, es->base[3]);
939 snd_es1968_trigger_apu(chip, es->apu[3], es->apu_mode[3]);
940 }
941 }
942 spin_unlock(&chip->reg_lock);
943 }
944
945 static void snd_es1968_pcm_stop(struct es1968 *chip, struct esschan *es)
946 {
947 spin_lock(&chip->reg_lock);
948 snd_es1968_trigger_apu(chip, es->apu[0], 0);
949 snd_es1968_trigger_apu(chip, es->apu[1], 0);
950 if (es->mode == ESM_MODE_CAPTURE) {
951 snd_es1968_trigger_apu(chip, es->apu[2], 0);
952 snd_es1968_trigger_apu(chip, es->apu[3], 0);
953 }
954 spin_unlock(&chip->reg_lock);
955 }
956
957 /* set the wavecache control reg */
958 static void snd_es1968_program_wavecache(struct es1968 *chip, struct esschan *es,
959 int channel, u32 addr, int capture)
960 {
961 u32 tmpval = (addr - 0x10) & 0xFFF8;
962
963 if (! capture) {
964 if (!(es->fmt & ESS_FMT_16BIT))
965 tmpval |= 4; /* 8bit */
966 if (es->fmt & ESS_FMT_STEREO)
967 tmpval |= 2; /* stereo */
968 }
969
970 /* set the wavecache control reg */
971 wave_set_register(chip, es->apu[channel] << 3, tmpval);
972
973 es->wc_map[channel] = tmpval;
974 }
975
976
977 static void snd_es1968_playback_setup(struct es1968 *chip, struct esschan *es,
978 struct snd_pcm_runtime *runtime)
979 {
980 u32 pa;
981 int high_apu = 0;
982 int channel, apu;
983 int i, size;
984 unsigned long flags;
985 u32 freq;
986
987 size = es->dma_size >> es->wav_shift;
988
989 if (es->fmt & ESS_FMT_STEREO)
990 high_apu++;
991
992 for (channel = 0; channel <= high_apu; channel++) {
993 apu = es->apu[channel];
994
995 snd_es1968_program_wavecache(chip, es, channel, es->memory->buf.addr, 0);
996
997 /* Offset to PCMBAR */
998 pa = es->memory->buf.addr;
999 pa -= chip->dma.addr;
1000 pa >>= 1; /* words */
1001
1002 pa |= 0x00400000; /* System RAM (Bit 22) */
1003
1004 if (es->fmt & ESS_FMT_STEREO) {
1005 /* Enable stereo */
1006 if (channel)
1007 pa |= 0x00800000; /* (Bit 23) */
1008 if (es->fmt & ESS_FMT_16BIT)
1009 pa >>= 1;
1010 }
1011
1012 /* base offset of dma calcs when reading the pointer
1013 on this left one */
1014 es->base[channel] = pa & 0xFFFF;
1015
1016 for (i = 0; i < 16; i++)
1017 apu_set_register(chip, apu, i, 0x0000);
1018
1019 /* Load the buffer into the wave engine */
1020 apu_set_register(chip, apu, 4, ((pa >> 16) & 0xFF) << 8);
1021 apu_set_register(chip, apu, 5, pa & 0xFFFF);
1022 apu_set_register(chip, apu, 6, (pa + size) & 0xFFFF);
1023 /* setting loop == sample len */
1024 apu_set_register(chip, apu, 7, size);
1025
1026 /* clear effects/env.. */
1027 apu_set_register(chip, apu, 8, 0x0000);
1028 /* set amp now to 0xd0 (?), low byte is 'amplitude dest'? */
1029 apu_set_register(chip, apu, 9, 0xD000);
1030
1031 /* clear routing stuff */
1032 apu_set_register(chip, apu, 11, 0x0000);
1033 /* dma on, no envelopes, filter to all 1s) */
1034 apu_set_register(chip, apu, 0, 0x400F);
1035
1036 if (es->fmt & ESS_FMT_16BIT)
1037 es->apu_mode[channel] = ESM_APU_16BITLINEAR;
1038 else
1039 es->apu_mode[channel] = ESM_APU_8BITLINEAR;
1040
1041 if (es->fmt & ESS_FMT_STEREO) {
1042 /* set panning: left or right */
1043 /* Check: different panning. On my Canyon 3D Chipset the
1044 Channels are swapped. I don't know, about the output
1045 to the SPDif Link. Perhaps you have to change this
1046 and not the APU Regs 4-5. */
1047 apu_set_register(chip, apu, 10,
1048 0x8F00 | (channel ? 0 : 0x10));
1049 es->apu_mode[channel] += 1; /* stereo */
1050 } else
1051 apu_set_register(chip, apu, 10, 0x8F08);
1052 }
1053
1054 spin_lock_irqsave(&chip->reg_lock, flags);
1055 /* clear WP interrupts */
1056 outw(1, chip->io_port + 0x04);
1057 /* enable WP ints */
1058 outw(inw(chip->io_port + ESM_PORT_HOST_IRQ) | ESM_HIRQ_DSIE, chip->io_port + ESM_PORT_HOST_IRQ);
1059 spin_unlock_irqrestore(&chip->reg_lock, flags);
1060
1061 freq = runtime->rate;
1062 /* set frequency */
1063 if (freq > 48000)
1064 freq = 48000;
1065 if (freq < 4000)
1066 freq = 4000;
1067
1068 /* hmmm.. */
1069 if (!(es->fmt & ESS_FMT_16BIT) && !(es->fmt & ESS_FMT_STEREO))
1070 freq >>= 1;
1071
1072 freq = snd_es1968_compute_rate(chip, freq);
1073
1074 /* Load the frequency, turn on 6dB */
1075 snd_es1968_apu_set_freq(chip, es->apu[0], freq);
1076 snd_es1968_apu_set_freq(chip, es->apu[1], freq);
1077 }
1078
1079
1080 static void init_capture_apu(struct es1968 *chip, struct esschan *es, int channel,
1081 unsigned int pa, unsigned int bsize,
1082 int mode, int route)
1083 {
1084 int i, apu = es->apu[channel];
1085
1086 es->apu_mode[channel] = mode;
1087
1088 /* set the wavecache control reg */
1089 snd_es1968_program_wavecache(chip, es, channel, pa, 1);
1090
1091 /* Offset to PCMBAR */
1092 pa -= chip->dma.addr;
1093 pa >>= 1; /* words */
1094
1095 /* base offset of dma calcs when reading the pointer
1096 on this left one */
1097 es->base[channel] = pa & 0xFFFF;
1098 pa |= 0x00400000; /* bit 22 -> System RAM */
1099
1100 /* Begin loading the APU */
1101 for (i = 0; i < 16; i++)
1102 apu_set_register(chip, apu, i, 0x0000);
1103
1104 /* need to enable subgroups.. and we should probably
1105 have different groups for different /dev/dsps.. */
1106 apu_set_register(chip, apu, 2, 0x8);
1107
1108 /* Load the buffer into the wave engine */
1109 apu_set_register(chip, apu, 4, ((pa >> 16) & 0xFF) << 8);
1110 apu_set_register(chip, apu, 5, pa & 0xFFFF);
1111 apu_set_register(chip, apu, 6, (pa + bsize) & 0xFFFF);
1112 apu_set_register(chip, apu, 7, bsize);
1113 /* clear effects/env.. */
1114 apu_set_register(chip, apu, 8, 0x00F0);
1115 /* amplitude now? sure. why not. */
1116 apu_set_register(chip, apu, 9, 0x0000);
1117 /* set filter tune, radius, polar pan */
1118 apu_set_register(chip, apu, 10, 0x8F08);
1119 /* route input */
1120 apu_set_register(chip, apu, 11, route);
1121 /* dma on, no envelopes, filter to all 1s) */
1122 apu_set_register(chip, apu, 0, 0x400F);
1123 }
1124
1125 static void snd_es1968_capture_setup(struct es1968 *chip, struct esschan *es,
1126 struct snd_pcm_runtime *runtime)
1127 {
1128 int size;
1129 u32 freq;
1130 unsigned long flags;
1131
1132 size = es->dma_size >> es->wav_shift;
1133
1134 /* APU assignments:
1135 0 = mono/left SRC
1136 1 = right SRC
1137 2 = mono/left Input Mixer
1138 3 = right Input Mixer
1139 */
1140 /* data seems to flow from the codec, through an apu into
1141 the 'mixbuf' bit of page, then through the SRC apu
1142 and out to the real 'buffer'. ok. sure. */
1143
1144 /* input mixer (left/mono) */
1145 /* parallel in crap, see maestro reg 0xC [8-11] */
1146 init_capture_apu(chip, es, 2,
1147 es->mixbuf->buf.addr, ESM_MIXBUF_SIZE/4, /* in words */
1148 ESM_APU_INPUTMIXER, 0x14);
1149 /* SRC (left/mono); get input from inputing apu */
1150 init_capture_apu(chip, es, 0, es->memory->buf.addr, size,
1151 ESM_APU_SRCONVERTOR, es->apu[2]);
1152 if (es->fmt & ESS_FMT_STEREO) {
1153 /* input mixer (right) */
1154 init_capture_apu(chip, es, 3,
1155 es->mixbuf->buf.addr + ESM_MIXBUF_SIZE/2,
1156 ESM_MIXBUF_SIZE/4, /* in words */
1157 ESM_APU_INPUTMIXER, 0x15);
1158 /* SRC (right) */
1159 init_capture_apu(chip, es, 1,
1160 es->memory->buf.addr + size*2, size,
1161 ESM_APU_SRCONVERTOR, es->apu[3]);
1162 }
1163
1164 freq = runtime->rate;
1165 /* Sample Rate conversion APUs don't like 0x10000 for their rate */
1166 if (freq > 47999)
1167 freq = 47999;
1168 if (freq < 4000)
1169 freq = 4000;
1170
1171 freq = snd_es1968_compute_rate(chip, freq);
1172
1173 /* Load the frequency, turn on 6dB */
1174 snd_es1968_apu_set_freq(chip, es->apu[0], freq);
1175 snd_es1968_apu_set_freq(chip, es->apu[1], freq);
1176
1177 /* fix mixer rate at 48khz. and its _must_ be 0x10000. */
1178 freq = 0x10000;
1179 snd_es1968_apu_set_freq(chip, es->apu[2], freq);
1180 snd_es1968_apu_set_freq(chip, es->apu[3], freq);
1181
1182 spin_lock_irqsave(&chip->reg_lock, flags);
1183 /* clear WP interrupts */
1184 outw(1, chip->io_port + 0x04);
1185 /* enable WP ints */
1186 outw(inw(chip->io_port + ESM_PORT_HOST_IRQ) | ESM_HIRQ_DSIE, chip->io_port + ESM_PORT_HOST_IRQ);
1187 spin_unlock_irqrestore(&chip->reg_lock, flags);
1188 }
1189
1190 /*******************
1191 * ALSA Interface *
1192 *******************/
1193
1194 static int snd_es1968_pcm_prepare(struct snd_pcm_substream *substream)
1195 {
1196 struct es1968 *chip = snd_pcm_substream_chip(substream);
1197 struct snd_pcm_runtime *runtime = substream->runtime;
1198 struct esschan *es = runtime->private_data;
1199
1200 es->dma_size = snd_pcm_lib_buffer_bytes(substream);
1201 es->frag_size = snd_pcm_lib_period_bytes(substream);
1202
1203 es->wav_shift = 1; /* maestro handles always 16bit */
1204 es->fmt = 0;
1205 if (snd_pcm_format_width(runtime->format) == 16)
1206 es->fmt |= ESS_FMT_16BIT;
1207 if (runtime->channels > 1) {
1208 es->fmt |= ESS_FMT_STEREO;
1209 if (es->fmt & ESS_FMT_16BIT) /* 8bit is already word shifted */
1210 es->wav_shift++;
1211 }
1212 es->bob_freq = snd_es1968_calc_bob_rate(chip, es, runtime);
1213
1214 switch (es->mode) {
1215 case ESM_MODE_PLAY:
1216 snd_es1968_playback_setup(chip, es, runtime);
1217 break;
1218 case ESM_MODE_CAPTURE:
1219 snd_es1968_capture_setup(chip, es, runtime);
1220 break;
1221 }
1222
1223 return 0;
1224 }
1225
1226 static int snd_es1968_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
1227 {
1228 struct es1968 *chip = snd_pcm_substream_chip(substream);
1229 struct esschan *es = substream->runtime->private_data;
1230
1231 spin_lock(&chip->substream_lock);
1232 switch (cmd) {
1233 case SNDRV_PCM_TRIGGER_START:
1234 case SNDRV_PCM_TRIGGER_RESUME:
1235 if (es->running)
1236 break;
1237 snd_es1968_bob_inc(chip, es->bob_freq);
1238 es->count = 0;
1239 es->hwptr = 0;
1240 snd_es1968_pcm_start(chip, es);
1241 es->running = 1;
1242 break;
1243 case SNDRV_PCM_TRIGGER_STOP:
1244 case SNDRV_PCM_TRIGGER_SUSPEND:
1245 if (! es->running)
1246 break;
1247 snd_es1968_pcm_stop(chip, es);
1248 es->running = 0;
1249 snd_es1968_bob_dec(chip);
1250 break;
1251 }
1252 spin_unlock(&chip->substream_lock);
1253 return 0;
1254 }
1255
1256 static snd_pcm_uframes_t snd_es1968_pcm_pointer(struct snd_pcm_substream *substream)
1257 {
1258 struct es1968 *chip = snd_pcm_substream_chip(substream);
1259 struct esschan *es = substream->runtime->private_data;
1260 unsigned int ptr;
1261
1262 ptr = snd_es1968_get_dma_ptr(chip, es) << es->wav_shift;
1263
1264 return bytes_to_frames(substream->runtime, ptr % es->dma_size);
1265 }
1266
1267 static const struct snd_pcm_hardware snd_es1968_playback = {
1268 .info = (SNDRV_PCM_INFO_MMAP |
1269 SNDRV_PCM_INFO_MMAP_VALID |
1270 SNDRV_PCM_INFO_INTERLEAVED |
1271 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1272 /*SNDRV_PCM_INFO_PAUSE |*/
1273 SNDRV_PCM_INFO_RESUME),
1274 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1275 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1276 .rate_min = 4000,
1277 .rate_max = 48000,
1278 .channels_min = 1,
1279 .channels_max = 2,
1280 .buffer_bytes_max = 65536,
1281 .period_bytes_min = 256,
1282 .period_bytes_max = 65536,
1283 .periods_min = 1,
1284 .periods_max = 1024,
1285 .fifo_size = 0,
1286 };
1287
1288 static const struct snd_pcm_hardware snd_es1968_capture = {
1289 .info = (SNDRV_PCM_INFO_NONINTERLEAVED |
1290 SNDRV_PCM_INFO_MMAP |
1291 SNDRV_PCM_INFO_MMAP_VALID |
1292 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1293 /*SNDRV_PCM_INFO_PAUSE |*/
1294 SNDRV_PCM_INFO_RESUME),
1295 .formats = /*SNDRV_PCM_FMTBIT_U8 |*/ SNDRV_PCM_FMTBIT_S16_LE,
1296 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1297 .rate_min = 4000,
1298 .rate_max = 48000,
1299 .channels_min = 1,
1300 .channels_max = 2,
1301 .buffer_bytes_max = 65536,
1302 .period_bytes_min = 256,
1303 .period_bytes_max = 65536,
1304 .periods_min = 1,
1305 .periods_max = 1024,
1306 .fifo_size = 0,
1307 };
1308
1309 /* *************************
1310 * DMA memory management *
1311 *************************/
1312
1313 /* Because the Maestro can only take addresses relative to the PCM base address
1314 register :( */
1315
1316 static int calc_available_memory_size(struct es1968 *chip)
1317 {
1318 int max_size = 0;
1319 struct esm_memory *buf;
1320
1321 mutex_lock(&chip->memory_mutex);
1322 list_for_each_entry(buf, &chip->buf_list, list) {
1323 if (buf->empty && buf->buf.bytes > max_size)
1324 max_size = buf->buf.bytes;
1325 }
1326 mutex_unlock(&chip->memory_mutex);
1327 if (max_size >= 128*1024)
1328 max_size = 127*1024;
1329 return max_size;
1330 }
1331
1332 /* allocate a new memory chunk with the specified size */
1333 static struct esm_memory *snd_es1968_new_memory(struct es1968 *chip, int size)
1334 {
1335 struct esm_memory *buf;
1336
1337 size = ALIGN(size, ESM_MEM_ALIGN);
1338 mutex_lock(&chip->memory_mutex);
1339 list_for_each_entry(buf, &chip->buf_list, list) {
1340 if (buf->empty && buf->buf.bytes >= size)
1341 goto __found;
1342 }
1343 mutex_unlock(&chip->memory_mutex);
1344 return NULL;
1345
1346 __found:
1347 if (buf->buf.bytes > size) {
1348 struct esm_memory *chunk = kmalloc(sizeof(*chunk), GFP_KERNEL);
1349 if (chunk == NULL) {
1350 mutex_unlock(&chip->memory_mutex);
1351 return NULL;
1352 }
1353 chunk->buf = buf->buf;
1354 chunk->buf.bytes -= size;
1355 chunk->buf.area += size;
1356 chunk->buf.addr += size;
1357 chunk->empty = 1;
1358 buf->buf.bytes = size;
1359 list_add(&chunk->list, &buf->list);
1360 }
1361 buf->empty = 0;
1362 mutex_unlock(&chip->memory_mutex);
1363 return buf;
1364 }
1365
1366 /* free a memory chunk */
1367 static void snd_es1968_free_memory(struct es1968 *chip, struct esm_memory *buf)
1368 {
1369 struct esm_memory *chunk;
1370
1371 mutex_lock(&chip->memory_mutex);
1372 buf->empty = 1;
1373 if (buf->list.prev != &chip->buf_list) {
1374 chunk = list_entry(buf->list.prev, struct esm_memory, list);
1375 if (chunk->empty) {
1376 chunk->buf.bytes += buf->buf.bytes;
1377 list_del(&buf->list);
1378 kfree(buf);
1379 buf = chunk;
1380 }
1381 }
1382 if (buf->list.next != &chip->buf_list) {
1383 chunk = list_entry(buf->list.next, struct esm_memory, list);
1384 if (chunk->empty) {
1385 buf->buf.bytes += chunk->buf.bytes;
1386 list_del(&chunk->list);
1387 kfree(chunk);
1388 }
1389 }
1390 mutex_unlock(&chip->memory_mutex);
1391 }
1392
1393 static void snd_es1968_free_dmabuf(struct es1968 *chip)
1394 {
1395 struct list_head *p;
1396
1397 if (! chip->dma.area)
1398 return;
1399 snd_dma_free_pages(&chip->dma);
1400 while ((p = chip->buf_list.next) != &chip->buf_list) {
1401 struct esm_memory *chunk = list_entry(p, struct esm_memory, list);
1402 list_del(p);
1403 kfree(chunk);
1404 }
1405 }
1406
1407 static int
1408 snd_es1968_init_dmabuf(struct es1968 *chip)
1409 {
1410 int err;
1411 struct esm_memory *chunk;
1412
1413 err = snd_dma_alloc_pages_fallback(SNDRV_DMA_TYPE_DEV,
1414 &chip->pci->dev,
1415 chip->total_bufsize, &chip->dma);
1416 if (err < 0 || ! chip->dma.area) {
1417 dev_err(chip->card->dev,
1418 "can't allocate dma pages for size %d\n",
1419 chip->total_bufsize);
1420 return -ENOMEM;
1421 }
1422 if ((chip->dma.addr + chip->dma.bytes - 1) & ~((1 << 28) - 1)) {
1423 snd_dma_free_pages(&chip->dma);
1424 dev_err(chip->card->dev, "DMA buffer beyond 256MB.\n");
1425 return -ENOMEM;
1426 }
1427
1428 INIT_LIST_HEAD(&chip->buf_list);
1429 /* allocate an empty chunk */
1430 chunk = kmalloc(sizeof(*chunk), GFP_KERNEL);
1431 if (chunk == NULL) {
1432 snd_es1968_free_dmabuf(chip);
1433 return -ENOMEM;
1434 }
1435 memset(chip->dma.area, 0, ESM_MEM_ALIGN);
1436 chunk->buf = chip->dma;
1437 chunk->buf.area += ESM_MEM_ALIGN;
1438 chunk->buf.addr += ESM_MEM_ALIGN;
1439 chunk->buf.bytes -= ESM_MEM_ALIGN;
1440 chunk->empty = 1;
1441 list_add(&chunk->list, &chip->buf_list);
1442
1443 return 0;
1444 }
1445
1446 /* setup the dma_areas */
1447 /* buffer is extracted from the pre-allocated memory chunk */
1448 static int snd_es1968_hw_params(struct snd_pcm_substream *substream,
1449 struct snd_pcm_hw_params *hw_params)
1450 {
1451 struct es1968 *chip = snd_pcm_substream_chip(substream);
1452 struct snd_pcm_runtime *runtime = substream->runtime;
1453 struct esschan *chan = runtime->private_data;
1454 int size = params_buffer_bytes(hw_params);
1455
1456 if (chan->memory) {
1457 if (chan->memory->buf.bytes >= size) {
1458 runtime->dma_bytes = size;
1459 return 0;
1460 }
1461 snd_es1968_free_memory(chip, chan->memory);
1462 }
1463 chan->memory = snd_es1968_new_memory(chip, size);
1464 if (chan->memory == NULL) {
1465 dev_dbg(chip->card->dev,
1466 "cannot allocate dma buffer: size = %d\n", size);
1467 return -ENOMEM;
1468 }
1469 snd_pcm_set_runtime_buffer(substream, &chan->memory->buf);
1470 return 1; /* area was changed */
1471 }
1472
1473 /* remove dma areas if allocated */
1474 static int snd_es1968_hw_free(struct snd_pcm_substream *substream)
1475 {
1476 struct es1968 *chip = snd_pcm_substream_chip(substream);
1477 struct snd_pcm_runtime *runtime = substream->runtime;
1478 struct esschan *chan;
1479
1480 if (runtime->private_data == NULL)
1481 return 0;
1482 chan = runtime->private_data;
1483 if (chan->memory) {
1484 snd_es1968_free_memory(chip, chan->memory);
1485 chan->memory = NULL;
1486 }
1487 return 0;
1488 }
1489
1490
1491 /*
1492 * allocate APU pair
1493 */
1494 static int snd_es1968_alloc_apu_pair(struct es1968 *chip, int type)
1495 {
1496 int apu;
1497
1498 for (apu = 0; apu < NR_APUS; apu += 2) {
1499 if (chip->apu[apu] == ESM_APU_FREE &&
1500 chip->apu[apu + 1] == ESM_APU_FREE) {
1501 chip->apu[apu] = chip->apu[apu + 1] = type;
1502 return apu;
1503 }
1504 }
1505 return -EBUSY;
1506 }
1507
1508 /*
1509 * release APU pair
1510 */
1511 static void snd_es1968_free_apu_pair(struct es1968 *chip, int apu)
1512 {
1513 chip->apu[apu] = chip->apu[apu + 1] = ESM_APU_FREE;
1514 }
1515
1516
1517 /******************
1518 * PCM open/close *
1519 ******************/
1520
1521 static int snd_es1968_playback_open(struct snd_pcm_substream *substream)
1522 {
1523 struct es1968 *chip = snd_pcm_substream_chip(substream);
1524 struct snd_pcm_runtime *runtime = substream->runtime;
1525 struct esschan *es;
1526 int apu1;
1527
1528 /* search 2 APUs */
1529 apu1 = snd_es1968_alloc_apu_pair(chip, ESM_APU_PCM_PLAY);
1530 if (apu1 < 0)
1531 return apu1;
1532
1533 es = kzalloc(sizeof(*es), GFP_KERNEL);
1534 if (!es) {
1535 snd_es1968_free_apu_pair(chip, apu1);
1536 return -ENOMEM;
1537 }
1538
1539 es->apu[0] = apu1;
1540 es->apu[1] = apu1 + 1;
1541 es->apu_mode[0] = 0;
1542 es->apu_mode[1] = 0;
1543 es->running = 0;
1544 es->substream = substream;
1545 es->mode = ESM_MODE_PLAY;
1546
1547 runtime->private_data = es;
1548 runtime->hw = snd_es1968_playback;
1549 runtime->hw.buffer_bytes_max = runtime->hw.period_bytes_max =
1550 calc_available_memory_size(chip);
1551
1552 spin_lock_irq(&chip->substream_lock);
1553 list_add(&es->list, &chip->substream_list);
1554 spin_unlock_irq(&chip->substream_lock);
1555
1556 return 0;
1557 }
1558
1559 static int snd_es1968_capture_open(struct snd_pcm_substream *substream)
1560 {
1561 struct snd_pcm_runtime *runtime = substream->runtime;
1562 struct es1968 *chip = snd_pcm_substream_chip(substream);
1563 struct esschan *es;
1564 int apu1, apu2;
1565
1566 apu1 = snd_es1968_alloc_apu_pair(chip, ESM_APU_PCM_CAPTURE);
1567 if (apu1 < 0)
1568 return apu1;
1569 apu2 = snd_es1968_alloc_apu_pair(chip, ESM_APU_PCM_RATECONV);
1570 if (apu2 < 0) {
1571 snd_es1968_free_apu_pair(chip, apu1);
1572 return apu2;
1573 }
1574
1575 es = kzalloc(sizeof(*es), GFP_KERNEL);
1576 if (!es) {
1577 snd_es1968_free_apu_pair(chip, apu1);
1578 snd_es1968_free_apu_pair(chip, apu2);
1579 return -ENOMEM;
1580 }
1581
1582 es->apu[0] = apu1;
1583 es->apu[1] = apu1 + 1;
1584 es->apu[2] = apu2;
1585 es->apu[3] = apu2 + 1;
1586 es->apu_mode[0] = 0;
1587 es->apu_mode[1] = 0;
1588 es->apu_mode[2] = 0;
1589 es->apu_mode[3] = 0;
1590 es->running = 0;
1591 es->substream = substream;
1592 es->mode = ESM_MODE_CAPTURE;
1593
1594 /* get mixbuffer */
1595 es->mixbuf = snd_es1968_new_memory(chip, ESM_MIXBUF_SIZE);
1596 if (!es->mixbuf) {
1597 snd_es1968_free_apu_pair(chip, apu1);
1598 snd_es1968_free_apu_pair(chip, apu2);
1599 kfree(es);
1600 return -ENOMEM;
1601 }
1602 memset(es->mixbuf->buf.area, 0, ESM_MIXBUF_SIZE);
1603
1604 runtime->private_data = es;
1605 runtime->hw = snd_es1968_capture;
1606 runtime->hw.buffer_bytes_max = runtime->hw.period_bytes_max =
1607 calc_available_memory_size(chip) - 1024; /* keep MIXBUF size */
1608 snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES);
1609
1610 spin_lock_irq(&chip->substream_lock);
1611 list_add(&es->list, &chip->substream_list);
1612 spin_unlock_irq(&chip->substream_lock);
1613
1614 return 0;
1615 }
1616
1617 static int snd_es1968_playback_close(struct snd_pcm_substream *substream)
1618 {
1619 struct es1968 *chip = snd_pcm_substream_chip(substream);
1620 struct esschan *es;
1621
1622 if (substream->runtime->private_data == NULL)
1623 return 0;
1624 es = substream->runtime->private_data;
1625 spin_lock_irq(&chip->substream_lock);
1626 list_del(&es->list);
1627 spin_unlock_irq(&chip->substream_lock);
1628 snd_es1968_free_apu_pair(chip, es->apu[0]);
1629 kfree(es);
1630
1631 return 0;
1632 }
1633
1634 static int snd_es1968_capture_close(struct snd_pcm_substream *substream)
1635 {
1636 struct es1968 *chip = snd_pcm_substream_chip(substream);
1637 struct esschan *es;
1638
1639 if (substream->runtime->private_data == NULL)
1640 return 0;
1641 es = substream->runtime->private_data;
1642 spin_lock_irq(&chip->substream_lock);
1643 list_del(&es->list);
1644 spin_unlock_irq(&chip->substream_lock);
1645 snd_es1968_free_memory(chip, es->mixbuf);
1646 snd_es1968_free_apu_pair(chip, es->apu[0]);
1647 snd_es1968_free_apu_pair(chip, es->apu[2]);
1648 kfree(es);
1649
1650 return 0;
1651 }
1652
1653 static const struct snd_pcm_ops snd_es1968_playback_ops = {
1654 .open = snd_es1968_playback_open,
1655 .close = snd_es1968_playback_close,
1656 .hw_params = snd_es1968_hw_params,
1657 .hw_free = snd_es1968_hw_free,
1658 .prepare = snd_es1968_pcm_prepare,
1659 .trigger = snd_es1968_pcm_trigger,
1660 .pointer = snd_es1968_pcm_pointer,
1661 };
1662
1663 static const struct snd_pcm_ops snd_es1968_capture_ops = {
1664 .open = snd_es1968_capture_open,
1665 .close = snd_es1968_capture_close,
1666 .hw_params = snd_es1968_hw_params,
1667 .hw_free = snd_es1968_hw_free,
1668 .prepare = snd_es1968_pcm_prepare,
1669 .trigger = snd_es1968_pcm_trigger,
1670 .pointer = snd_es1968_pcm_pointer,
1671 };
1672
1673
1674 /*
1675 * measure clock
1676 */
1677 #define CLOCK_MEASURE_BUFSIZE 16768 /* enough large for a single shot */
1678
1679 static void es1968_measure_clock(struct es1968 *chip)
1680 {
1681 int i, apu;
1682 unsigned int pa, offset, t;
1683 struct esm_memory *memory;
1684 ktime_t start_time, stop_time;
1685 ktime_t diff;
1686
1687 if (chip->clock == 0)
1688 chip->clock = 48000; /* default clock value */
1689
1690 /* search 2 APUs (although one apu is enough) */
1691 apu = snd_es1968_alloc_apu_pair(chip, ESM_APU_PCM_PLAY);
1692 if (apu < 0) {
1693 dev_err(chip->card->dev, "Hmm, cannot find empty APU pair!?\n");
1694 return;
1695 }
1696 memory = snd_es1968_new_memory(chip, CLOCK_MEASURE_BUFSIZE);
1697 if (!memory) {
1698 dev_warn(chip->card->dev,
1699 "cannot allocate dma buffer - using default clock %d\n",
1700 chip->clock);
1701 snd_es1968_free_apu_pair(chip, apu);
1702 return;
1703 }
1704
1705 memset(memory->buf.area, 0, CLOCK_MEASURE_BUFSIZE);
1706
1707 wave_set_register(chip, apu << 3, (memory->buf.addr - 0x10) & 0xfff8);
1708
1709 pa = (unsigned int)((memory->buf.addr - chip->dma.addr) >> 1);
1710 pa |= 0x00400000; /* System RAM (Bit 22) */
1711
1712 /* initialize apu */
1713 for (i = 0; i < 16; i++)
1714 apu_set_register(chip, apu, i, 0x0000);
1715
1716 apu_set_register(chip, apu, 0, 0x400f);
1717 apu_set_register(chip, apu, 4, ((pa >> 16) & 0xff) << 8);
1718 apu_set_register(chip, apu, 5, pa & 0xffff);
1719 apu_set_register(chip, apu, 6, (pa + CLOCK_MEASURE_BUFSIZE/2) & 0xffff);
1720 apu_set_register(chip, apu, 7, CLOCK_MEASURE_BUFSIZE/2);
1721 apu_set_register(chip, apu, 8, 0x0000);
1722 apu_set_register(chip, apu, 9, 0xD000);
1723 apu_set_register(chip, apu, 10, 0x8F08);
1724 apu_set_register(chip, apu, 11, 0x0000);
1725 spin_lock_irq(&chip->reg_lock);
1726 outw(1, chip->io_port + 0x04); /* clear WP interrupts */
1727 outw(inw(chip->io_port + ESM_PORT_HOST_IRQ) | ESM_HIRQ_DSIE, chip->io_port + ESM_PORT_HOST_IRQ); /* enable WP ints */
1728 spin_unlock_irq(&chip->reg_lock);
1729
1730 snd_es1968_apu_set_freq(chip, apu, ((unsigned int)48000 << 16) / chip->clock); /* 48000 Hz */
1731
1732 chip->in_measurement = 1;
1733 chip->measure_apu = apu;
1734 spin_lock_irq(&chip->reg_lock);
1735 snd_es1968_bob_inc(chip, ESM_BOB_FREQ);
1736 __apu_set_register(chip, apu, 5, pa & 0xffff);
1737 snd_es1968_trigger_apu(chip, apu, ESM_APU_16BITLINEAR);
1738 start_time = ktime_get();
1739 spin_unlock_irq(&chip->reg_lock);
1740 msleep(50);
1741 spin_lock_irq(&chip->reg_lock);
1742 offset = __apu_get_register(chip, apu, 5);
1743 stop_time = ktime_get();
1744 snd_es1968_trigger_apu(chip, apu, 0); /* stop */
1745 snd_es1968_bob_dec(chip);
1746 chip->in_measurement = 0;
1747 spin_unlock_irq(&chip->reg_lock);
1748
1749 /* check the current position */
1750 offset -= (pa & 0xffff);
1751 offset &= 0xfffe;
1752 offset += chip->measure_count * (CLOCK_MEASURE_BUFSIZE/2);
1753
1754 diff = ktime_sub(stop_time, start_time);
1755 t = ktime_to_us(diff);
1756 if (t == 0) {
1757 dev_err(chip->card->dev, "?? calculation error..\n");
1758 } else {
1759 offset *= 1000;
1760 offset = (offset / t) * 1000 + ((offset % t) * 1000) / t;
1761 if (offset < 47500 || offset > 48500) {
1762 if (offset >= 40000 && offset <= 50000)
1763 chip->clock = (chip->clock * offset) / 48000;
1764 }
1765 dev_info(chip->card->dev, "clocking to %d\n", chip->clock);
1766 }
1767 snd_es1968_free_memory(chip, memory);
1768 snd_es1968_free_apu_pair(chip, apu);
1769 }
1770
1771
1772 /*
1773 */
1774
1775 static void snd_es1968_pcm_free(struct snd_pcm *pcm)
1776 {
1777 struct es1968 *esm = pcm->private_data;
1778 snd_es1968_free_dmabuf(esm);
1779 esm->pcm = NULL;
1780 }
1781
1782 static int
1783 snd_es1968_pcm(struct es1968 *chip, int device)
1784 {
1785 struct snd_pcm *pcm;
1786 int err;
1787
1788 /* get DMA buffer */
1789 err = snd_es1968_init_dmabuf(chip);
1790 if (err < 0)
1791 return err;
1792
1793 /* set PCMBAR */
1794 wave_set_register(chip, 0x01FC, chip->dma.addr >> 12);
1795 wave_set_register(chip, 0x01FD, chip->dma.addr >> 12);
1796 wave_set_register(chip, 0x01FE, chip->dma.addr >> 12);
1797 wave_set_register(chip, 0x01FF, chip->dma.addr >> 12);
1798
1799 err = snd_pcm_new(chip->card, "ESS Maestro", device,
1800 chip->playback_streams,
1801 chip->capture_streams, &pcm);
1802 if (err < 0)
1803 return err;
1804
1805 pcm->private_data = chip;
1806 pcm->private_free = snd_es1968_pcm_free;
1807
1808 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_es1968_playback_ops);
1809 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_es1968_capture_ops);
1810
1811 pcm->info_flags = 0;
1812
1813 strcpy(pcm->name, "ESS Maestro");
1814
1815 chip->pcm = pcm;
1816
1817 return 0;
1818 }
1819 /*
1820 * suppress jitter on some maestros when playing stereo
1821 */
1822 static void snd_es1968_suppress_jitter(struct es1968 *chip, struct esschan *es)
1823 {
1824 unsigned int cp1;
1825 unsigned int cp2;
1826 unsigned int diff;
1827
1828 cp1 = __apu_get_register(chip, 0, 5);
1829 cp2 = __apu_get_register(chip, 1, 5);
1830 diff = (cp1 > cp2 ? cp1 - cp2 : cp2 - cp1);
1831
1832 if (diff > 1)
1833 __maestro_write(chip, IDR0_DATA_PORT, cp1);
1834 }
1835
1836 /*
1837 * update pointer
1838 */
1839 static void snd_es1968_update_pcm(struct es1968 *chip, struct esschan *es)
1840 {
1841 unsigned int hwptr;
1842 unsigned int diff;
1843 struct snd_pcm_substream *subs = es->substream;
1844
1845 if (subs == NULL || !es->running)
1846 return;
1847
1848 hwptr = snd_es1968_get_dma_ptr(chip, es) << es->wav_shift;
1849 hwptr %= es->dma_size;
1850
1851 diff = (es->dma_size + hwptr - es->hwptr) % es->dma_size;
1852
1853 es->hwptr = hwptr;
1854 es->count += diff;
1855
1856 if (es->count > es->frag_size) {
1857 spin_unlock(&chip->substream_lock);
1858 snd_pcm_period_elapsed(subs);
1859 spin_lock(&chip->substream_lock);
1860 es->count %= es->frag_size;
1861 }
1862 }
1863
1864 /* The hardware volume works by incrementing / decrementing 2 counters
1865 (without wrap around) in response to volume button presses and then
1866 generating an interrupt. The pair of counters is stored in bits 1-3 and 5-7
1867 of a byte wide register. The meaning of bits 0 and 4 is unknown. */
1868 static void es1968_update_hw_volume(struct work_struct *work)
1869 {
1870 struct es1968 *chip = container_of(work, struct es1968, hwvol_work);
1871 int x, val;
1872
1873 /* Figure out which volume control button was pushed,
1874 based on differences from the default register
1875 values. */
1876 x = inb(chip->io_port + 0x1c) & 0xee;
1877 /* Reset the volume control registers. */
1878 outb(0x88, chip->io_port + 0x1c);
1879 outb(0x88, chip->io_port + 0x1d);
1880 outb(0x88, chip->io_port + 0x1e);
1881 outb(0x88, chip->io_port + 0x1f);
1882
1883 if (chip->in_suspend)
1884 return;
1885
1886 #ifndef CONFIG_SND_ES1968_INPUT
1887 if (! chip->master_switch || ! chip->master_volume)
1888 return;
1889
1890 val = snd_ac97_read(chip->ac97, AC97_MASTER);
1891 switch (x) {
1892 case 0x88:
1893 /* mute */
1894 val ^= 0x8000;
1895 break;
1896 case 0xaa:
1897 /* volume up */
1898 if ((val & 0x7f) > 0)
1899 val--;
1900 if ((val & 0x7f00) > 0)
1901 val -= 0x0100;
1902 break;
1903 case 0x66:
1904 /* volume down */
1905 if ((val & 0x7f) < 0x1f)
1906 val++;
1907 if ((val & 0x7f00) < 0x1f00)
1908 val += 0x0100;
1909 break;
1910 }
1911 if (snd_ac97_update(chip->ac97, AC97_MASTER, val))
1912 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
1913 &chip->master_volume->id);
1914 #else
1915 if (!chip->input_dev)
1916 return;
1917
1918 val = 0;
1919 switch (x) {
1920 case 0x88:
1921 /* The counters have not changed, yet we've received a HV
1922 interrupt. According to tests run by various people this
1923 happens when pressing the mute button. */
1924 val = KEY_MUTE;
1925 break;
1926 case 0xaa:
1927 /* counters increased by 1 -> volume up */
1928 val = KEY_VOLUMEUP;
1929 break;
1930 case 0x66:
1931 /* counters decreased by 1 -> volume down */
1932 val = KEY_VOLUMEDOWN;
1933 break;
1934 }
1935
1936 if (val) {
1937 input_report_key(chip->input_dev, val, 1);
1938 input_sync(chip->input_dev);
1939 input_report_key(chip->input_dev, val, 0);
1940 input_sync(chip->input_dev);
1941 }
1942 #endif
1943 }
1944
1945 /*
1946 * interrupt handler
1947 */
1948 static irqreturn_t snd_es1968_interrupt(int irq, void *dev_id)
1949 {
1950 struct es1968 *chip = dev_id;
1951 u32 event;
1952
1953 event = inb(chip->io_port + 0x1A);
1954 if (!event)
1955 return IRQ_NONE;
1956
1957 outw(inw(chip->io_port + 4) & 1, chip->io_port + 4);
1958
1959 if (event & ESM_HWVOL_IRQ)
1960 schedule_work(&chip->hwvol_work);
1961
1962 /* else ack 'em all, i imagine */
1963 outb(0xFF, chip->io_port + 0x1A);
1964
1965 if ((event & ESM_MPU401_IRQ) && chip->rmidi) {
1966 snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
1967 }
1968
1969 if (event & ESM_SOUND_IRQ) {
1970 struct esschan *es;
1971 spin_lock(&chip->substream_lock);
1972 list_for_each_entry(es, &chip->substream_list, list) {
1973 if (es->running) {
1974 snd_es1968_update_pcm(chip, es);
1975 if (es->fmt & ESS_FMT_STEREO)
1976 snd_es1968_suppress_jitter(chip, es);
1977 }
1978 }
1979 spin_unlock(&chip->substream_lock);
1980 if (chip->in_measurement) {
1981 unsigned int curp = __apu_get_register(chip, chip->measure_apu, 5);
1982 if (curp < chip->measure_lastpos)
1983 chip->measure_count++;
1984 chip->measure_lastpos = curp;
1985 }
1986 }
1987
1988 return IRQ_HANDLED;
1989 }
1990
1991 /*
1992 * Mixer stuff
1993 */
1994
1995 static int
1996 snd_es1968_mixer(struct es1968 *chip)
1997 {
1998 struct snd_ac97_bus *pbus;
1999 struct snd_ac97_template ac97;
2000 int err;
2001 static const struct snd_ac97_bus_ops ops = {
2002 .write = snd_es1968_ac97_write,
2003 .read = snd_es1968_ac97_read,
2004 };
2005
2006 err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus);
2007 if (err < 0)
2008 return err;
2009 pbus->no_vra = 1; /* ES1968 doesn't need VRA */
2010
2011 memset(&ac97, 0, sizeof(ac97));
2012 ac97.private_data = chip;
2013 err = snd_ac97_mixer(pbus, &ac97, &chip->ac97);
2014 if (err < 0)
2015 return err;
2016
2017 #ifndef CONFIG_SND_ES1968_INPUT
2018 /* attach master switch / volumes for h/w volume control */
2019 chip->master_switch = snd_ctl_find_id_mixer(chip->card,
2020 "Master Playback Switch");
2021 chip->master_volume = snd_ctl_find_id_mixer(chip->card,
2022 "Master Playback Volume");
2023 #endif
2024
2025 return 0;
2026 }
2027
2028 /*
2029 * reset ac97 codec
2030 */
2031
2032 static void snd_es1968_ac97_reset(struct es1968 *chip)
2033 {
2034 unsigned long ioaddr = chip->io_port;
2035
2036 unsigned short save_ringbus_a;
2037 unsigned short save_68;
2038 unsigned short w;
2039 unsigned int vend;
2040
2041 /* save configuration */
2042 save_ringbus_a = inw(ioaddr + 0x36);
2043
2044 //outw(inw(ioaddr + 0x38) & 0xfffc, ioaddr + 0x38); /* clear second codec id? */
2045 /* set command/status address i/o to 1st codec */
2046 outw(inw(ioaddr + 0x3a) & 0xfffc, ioaddr + 0x3a);
2047 outw(inw(ioaddr + 0x3c) & 0xfffc, ioaddr + 0x3c);
2048
2049 /* disable ac link */
2050 outw(0x0000, ioaddr + 0x36);
2051 save_68 = inw(ioaddr + 0x68);
2052 pci_read_config_word(chip->pci, 0x58, &w); /* something magical with gpio and bus arb. */
2053 pci_read_config_dword(chip->pci, PCI_SUBSYSTEM_VENDOR_ID, &vend);
2054 if (w & 1)
2055 save_68 |= 0x10;
2056 outw(0xfffe, ioaddr + 0x64); /* unmask gpio 0 */
2057 outw(0x0001, ioaddr + 0x68); /* gpio write */
2058 outw(0x0000, ioaddr + 0x60); /* write 0 to gpio 0 */
2059 udelay(20);
2060 outw(0x0001, ioaddr + 0x60); /* write 1 to gpio 1 */
2061 msleep(20);
2062
2063 outw(save_68 | 0x1, ioaddr + 0x68); /* now restore .. */
2064 outw((inw(ioaddr + 0x38) & 0xfffc) | 0x1, ioaddr + 0x38);
2065 outw((inw(ioaddr + 0x3a) & 0xfffc) | 0x1, ioaddr + 0x3a);
2066 outw((inw(ioaddr + 0x3c) & 0xfffc) | 0x1, ioaddr + 0x3c);
2067
2068 /* now the second codec */
2069 /* disable ac link */
2070 outw(0x0000, ioaddr + 0x36);
2071 outw(0xfff7, ioaddr + 0x64); /* unmask gpio 3 */
2072 save_68 = inw(ioaddr + 0x68);
2073 outw(0x0009, ioaddr + 0x68); /* gpio write 0 & 3 ?? */
2074 outw(0x0001, ioaddr + 0x60); /* write 1 to gpio */
2075 udelay(20);
2076 outw(0x0009, ioaddr + 0x60); /* write 9 to gpio */
2077 msleep(500);
2078 //outw(inw(ioaddr + 0x38) & 0xfffc, ioaddr + 0x38);
2079 outw(inw(ioaddr + 0x3a) & 0xfffc, ioaddr + 0x3a);
2080 outw(inw(ioaddr + 0x3c) & 0xfffc, ioaddr + 0x3c);
2081
2082 #if 0 /* the loop here needs to be much better if we want it.. */
2083 dev_info(chip->card->dev, "trying software reset\n");
2084 /* try and do a software reset */
2085 outb(0x80 | 0x7c, ioaddr + 0x30);
2086 for (w = 0;; w++) {
2087 if ((inw(ioaddr + 0x30) & 1) == 0) {
2088 if (inb(ioaddr + 0x32) != 0)
2089 break;
2090
2091 outb(0x80 | 0x7d, ioaddr + 0x30);
2092 if (((inw(ioaddr + 0x30) & 1) == 0)
2093 && (inb(ioaddr + 0x32) != 0))
2094 break;
2095 outb(0x80 | 0x7f, ioaddr + 0x30);
2096 if (((inw(ioaddr + 0x30) & 1) == 0)
2097 && (inb(ioaddr + 0x32) != 0))
2098 break;
2099 }
2100
2101 if (w > 10000) {
2102 outb(inb(ioaddr + 0x37) | 0x08, ioaddr + 0x37); /* do a software reset */
2103 msleep(500); /* oh my.. */
2104 outb(inb(ioaddr + 0x37) & ~0x08,
2105 ioaddr + 0x37);
2106 udelay(1);
2107 outw(0x80, ioaddr + 0x30);
2108 for (w = 0; w < 10000; w++) {
2109 if ((inw(ioaddr + 0x30) & 1) == 0)
2110 break;
2111 }
2112 }
2113 }
2114 #endif
2115 if (vend == NEC_VERSA_SUBID1 || vend == NEC_VERSA_SUBID2) {
2116 /* turn on external amp? */
2117 outw(0xf9ff, ioaddr + 0x64);
2118 outw(inw(ioaddr + 0x68) | 0x600, ioaddr + 0x68);
2119 outw(0x0209, ioaddr + 0x60);
2120 }
2121
2122 /* restore.. */
2123 outw(save_ringbus_a, ioaddr + 0x36);
2124
2125 /* Turn on the 978 docking chip.
2126 First frob the "master output enable" bit,
2127 then set most of the playback volume control registers to max. */
2128 outb(inb(ioaddr+0xc0)|(1<<5), ioaddr+0xc0);
2129 outb(0xff, ioaddr+0xc3);
2130 outb(0xff, ioaddr+0xc4);
2131 outb(0xff, ioaddr+0xc6);
2132 outb(0xff, ioaddr+0xc8);
2133 outb(0x3f, ioaddr+0xcf);
2134 outb(0x3f, ioaddr+0xd0);
2135 }
2136
2137 static void snd_es1968_reset(struct es1968 *chip)
2138 {
2139 /* Reset */
2140 outw(ESM_RESET_MAESTRO | ESM_RESET_DIRECTSOUND,
2141 chip->io_port + ESM_PORT_HOST_IRQ);
2142 udelay(10);
2143 outw(0x0000, chip->io_port + ESM_PORT_HOST_IRQ);
2144 udelay(10);
2145 }
2146
2147 /*
2148 * initialize maestro chip
2149 */
2150 static void snd_es1968_chip_init(struct es1968 *chip)
2151 {
2152 struct pci_dev *pci = chip->pci;
2153 int i;
2154 unsigned long iobase = chip->io_port;
2155 u16 w;
2156 u32 n;
2157
2158 /* We used to muck around with pci config space that
2159 * we had no business messing with. We don't know enough
2160 * about the machine to know which DMA mode is appropriate,
2161 * etc. We were guessing wrong on some machines and making
2162 * them unhappy. We now trust in the BIOS to do things right,
2163 * which almost certainly means a new host of problems will
2164 * arise with broken BIOS implementations. screw 'em.
2165 * We're already intolerant of machines that don't assign
2166 * IRQs.
2167 */
2168
2169 /* Config Reg A */
2170 pci_read_config_word(pci, ESM_CONFIG_A, &w);
2171
2172 w &= ~DMA_CLEAR; /* Clear DMA bits */
2173 w &= ~(PIC_SNOOP1 | PIC_SNOOP2); /* Clear Pic Snoop Mode Bits */
2174 w &= ~SAFEGUARD; /* Safeguard off */
2175 w |= POST_WRITE; /* Posted write */
2176 w |= PCI_TIMING; /* PCI timing on */
2177 /* XXX huh? claims to be reserved.. */
2178 w &= ~SWAP_LR; /* swap left/right
2179 seems to only have effect on SB
2180 Emulation */
2181 w &= ~SUBTR_DECODE; /* Subtractive decode off */
2182
2183 pci_write_config_word(pci, ESM_CONFIG_A, w);
2184
2185 /* Config Reg B */
2186
2187 pci_read_config_word(pci, ESM_CONFIG_B, &w);
2188
2189 w &= ~(1 << 15); /* Turn off internal clock multiplier */
2190 /* XXX how do we know which to use? */
2191 w &= ~(1 << 14); /* External clock */
2192
2193 w &= ~SPDIF_CONFB; /* disable S/PDIF output */
2194 w |= HWV_CONFB; /* HWV on */
2195 w |= DEBOUNCE; /* Debounce off: easier to push the HW buttons */
2196 w &= ~GPIO_CONFB; /* GPIO 4:5 */
2197 w |= CHI_CONFB; /* Disconnect from the CHI. Enabling this made a dell 7500 work. */
2198 w &= ~IDMA_CONFB; /* IDMA off (undocumented) */
2199 w &= ~MIDI_FIX; /* MIDI fix off (undoc) */
2200 w &= ~(1 << 1); /* reserved, always write 0 */
2201 w &= ~IRQ_TO_ISA; /* IRQ to ISA off (undoc) */
2202
2203 pci_write_config_word(pci, ESM_CONFIG_B, w);
2204
2205 /* DDMA off */
2206
2207 pci_read_config_word(pci, ESM_DDMA, &w);
2208 w &= ~(1 << 0);
2209 pci_write_config_word(pci, ESM_DDMA, w);
2210
2211 /*
2212 * Legacy mode
2213 */
2214
2215 pci_read_config_word(pci, ESM_LEGACY_AUDIO_CONTROL, &w);
2216
2217 w |= ESS_DISABLE_AUDIO; /* Disable Legacy Audio */
2218 w &= ~ESS_ENABLE_SERIAL_IRQ; /* Disable SIRQ */
2219 w &= ~(0x1f); /* disable mpu irq/io, game port, fm, SB */
2220
2221 pci_write_config_word(pci, ESM_LEGACY_AUDIO_CONTROL, w);
2222
2223 /* Set up 978 docking control chip. */
2224 pci_read_config_word(pci, 0x58, &w);
2225 w|=1<<2; /* Enable 978. */
2226 w|=1<<3; /* Turn on 978 hardware volume control. */
2227 w&=~(1<<11); /* Turn on 978 mixer volume control. */
2228 pci_write_config_word(pci, 0x58, w);
2229
2230 /* Sound Reset */
2231
2232 snd_es1968_reset(chip);
2233
2234 /*
2235 * Ring Bus Setup
2236 */
2237
2238 /* setup usual 0x34 stuff.. 0x36 may be chip specific */
2239 outw(0xC090, iobase + ESM_RING_BUS_DEST); /* direct sound, stereo */
2240 udelay(20);
2241 outw(0x3000, iobase + ESM_RING_BUS_CONTR_A); /* enable ringbus/serial */
2242 udelay(20);
2243
2244 /*
2245 * Reset the CODEC
2246 */
2247
2248 snd_es1968_ac97_reset(chip);
2249
2250 /* Ring Bus Control B */
2251
2252 n = inl(iobase + ESM_RING_BUS_CONTR_B);
2253 n &= ~RINGB_EN_SPDIF; /* SPDIF off */
2254 //w |= RINGB_EN_2CODEC; /* enable 2nd codec */
2255 outl(n, iobase + ESM_RING_BUS_CONTR_B);
2256
2257 /* Set hardware volume control registers to midpoints.
2258 We can tell which button was pushed based on how they change. */
2259 outb(0x88, iobase+0x1c);
2260 outb(0x88, iobase+0x1d);
2261 outb(0x88, iobase+0x1e);
2262 outb(0x88, iobase+0x1f);
2263
2264 /* it appears some maestros (dell 7500) only work if these are set,
2265 regardless of whether we use the assp or not. */
2266
2267 outb(0, iobase + ASSP_CONTROL_B);
2268 outb(3, iobase + ASSP_CONTROL_A); /* M: Reserved bits... */
2269 outb(0, iobase + ASSP_CONTROL_C); /* M: Disable ASSP, ASSP IRQ's and FM Port */
2270
2271 /*
2272 * set up wavecache
2273 */
2274 for (i = 0; i < 16; i++) {
2275 /* Write 0 into the buffer area 0x1E0->1EF */
2276 outw(0x01E0 + i, iobase + WC_INDEX);
2277 outw(0x0000, iobase + WC_DATA);
2278
2279 /* The 1.10 test program seem to write 0 into the buffer area
2280 * 0x1D0-0x1DF too.*/
2281 outw(0x01D0 + i, iobase + WC_INDEX);
2282 outw(0x0000, iobase + WC_DATA);
2283 }
2284 wave_set_register(chip, IDR7_WAVE_ROMRAM,
2285 (wave_get_register(chip, IDR7_WAVE_ROMRAM) & 0xFF00));
2286 wave_set_register(chip, IDR7_WAVE_ROMRAM,
2287 wave_get_register(chip, IDR7_WAVE_ROMRAM) | 0x100);
2288 wave_set_register(chip, IDR7_WAVE_ROMRAM,
2289 wave_get_register(chip, IDR7_WAVE_ROMRAM) & ~0x200);
2290 wave_set_register(chip, IDR7_WAVE_ROMRAM,
2291 wave_get_register(chip, IDR7_WAVE_ROMRAM) | ~0x400);
2292
2293
2294 maestro_write(chip, IDR2_CRAM_DATA, 0x0000);
2295 /* Now back to the DirectSound stuff */
2296 /* audio serial configuration.. ? */
2297 maestro_write(chip, 0x08, 0xB004);
2298 maestro_write(chip, 0x09, 0x001B);
2299 maestro_write(chip, 0x0A, 0x8000);
2300 maestro_write(chip, 0x0B, 0x3F37);
2301 maestro_write(chip, 0x0C, 0x0098);
2302
2303 /* parallel in, has something to do with recording :) */
2304 maestro_write(chip, 0x0C,
2305 (maestro_read(chip, 0x0C) & ~0xF000) | 0x8000);
2306 /* parallel out */
2307 maestro_write(chip, 0x0C,
2308 (maestro_read(chip, 0x0C) & ~0x0F00) | 0x0500);
2309
2310 maestro_write(chip, 0x0D, 0x7632);
2311
2312 /* Wave cache control on - test off, sg off,
2313 enable, enable extra chans 1Mb */
2314
2315 w = inw(iobase + WC_CONTROL);
2316
2317 w &= ~0xFA00; /* Seems to be reserved? I don't know */
2318 w |= 0xA000; /* reserved... I don't know */
2319 w &= ~0x0200; /* Channels 56,57,58,59 as Extra Play,Rec Channel enable
2320 Seems to crash the Computer if enabled... */
2321 w |= 0x0100; /* Wave Cache Operation Enabled */
2322 w |= 0x0080; /* Channels 60/61 as Placback/Record enabled */
2323 w &= ~0x0060; /* Clear Wavtable Size */
2324 w |= 0x0020; /* Wavetable Size : 1MB */
2325 /* Bit 4 is reserved */
2326 w &= ~0x000C; /* DMA Stuff? I don't understand what the datasheet means */
2327 /* Bit 1 is reserved */
2328 w &= ~0x0001; /* Test Mode off */
2329
2330 outw(w, iobase + WC_CONTROL);
2331
2332 /* Now clear the APU control ram */
2333 for (i = 0; i < NR_APUS; i++) {
2334 for (w = 0; w < NR_APU_REGS; w++)
2335 apu_set_register(chip, i, w, 0);
2336
2337 }
2338 }
2339
2340 /* Enable IRQ's */
2341 static void snd_es1968_start_irq(struct es1968 *chip)
2342 {
2343 unsigned short w;
2344 w = ESM_HIRQ_DSIE | ESM_HIRQ_HW_VOLUME;
2345 if (chip->rmidi)
2346 w |= ESM_HIRQ_MPU401;
2347 outb(w, chip->io_port + 0x1A);
2348 outw(w, chip->io_port + ESM_PORT_HOST_IRQ);
2349 }
2350
2351 /*
2352 * PM support
2353 */
2354 static int es1968_suspend(struct device *dev)
2355 {
2356 struct snd_card *card = dev_get_drvdata(dev);
2357 struct es1968 *chip = card->private_data;
2358
2359 if (! chip->do_pm)
2360 return 0;
2361
2362 chip->in_suspend = 1;
2363 cancel_work_sync(&chip->hwvol_work);
2364 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2365 snd_ac97_suspend(chip->ac97);
2366 snd_es1968_bob_stop(chip);
2367 return 0;
2368 }
2369
2370 static int es1968_resume(struct device *dev)
2371 {
2372 struct snd_card *card = dev_get_drvdata(dev);
2373 struct es1968 *chip = card->private_data;
2374 struct esschan *es;
2375
2376 if (! chip->do_pm)
2377 return 0;
2378
2379 snd_es1968_chip_init(chip);
2380
2381 /* need to restore the base pointers.. */
2382 if (chip->dma.addr) {
2383 /* set PCMBAR */
2384 wave_set_register(chip, 0x01FC, chip->dma.addr >> 12);
2385 }
2386
2387 snd_es1968_start_irq(chip);
2388
2389 /* restore ac97 state */
2390 snd_ac97_resume(chip->ac97);
2391
2392 list_for_each_entry(es, &chip->substream_list, list) {
2393 switch (es->mode) {
2394 case ESM_MODE_PLAY:
2395 snd_es1968_playback_setup(chip, es, es->substream->runtime);
2396 break;
2397 case ESM_MODE_CAPTURE:
2398 snd_es1968_capture_setup(chip, es, es->substream->runtime);
2399 break;
2400 }
2401 }
2402
2403 /* start timer again */
2404 if (chip->bobclient)
2405 snd_es1968_bob_start(chip);
2406
2407 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2408 chip->in_suspend = 0;
2409 return 0;
2410 }
2411
2412 static DEFINE_SIMPLE_DEV_PM_OPS(es1968_pm, es1968_suspend, es1968_resume);
2413
2414 #ifdef SUPPORT_JOYSTICK
2415 #define JOYSTICK_ADDR 0x200
2416 static int snd_es1968_create_gameport(struct es1968 *chip, int dev)
2417 {
2418 struct gameport *gp;
2419 struct resource *r;
2420 u16 val;
2421
2422 if (!joystick[dev])
2423 return -ENODEV;
2424
2425 r = devm_request_region(&chip->pci->dev, JOYSTICK_ADDR, 8,
2426 "ES1968 gameport");
2427 if (!r)
2428 return -EBUSY;
2429
2430 chip->gameport = gp = gameport_allocate_port();
2431 if (!gp) {
2432 dev_err(chip->card->dev,
2433 "cannot allocate memory for gameport\n");
2434 return -ENOMEM;
2435 }
2436
2437 pci_read_config_word(chip->pci, ESM_LEGACY_AUDIO_CONTROL, &val);
2438 pci_write_config_word(chip->pci, ESM_LEGACY_AUDIO_CONTROL, val | 0x04);
2439
2440 gameport_set_name(gp, "ES1968 Gameport");
2441 gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
2442 gameport_set_dev_parent(gp, &chip->pci->dev);
2443 gp->io = JOYSTICK_ADDR;
2444
2445 gameport_register_port(gp);
2446
2447 return 0;
2448 }
2449
2450 static void snd_es1968_free_gameport(struct es1968 *chip)
2451 {
2452 if (chip->gameport) {
2453 gameport_unregister_port(chip->gameport);
2454 chip->gameport = NULL;
2455 }
2456 }
2457 #else
2458 static inline int snd_es1968_create_gameport(struct es1968 *chip, int dev) { return -ENOSYS; }
2459 static inline void snd_es1968_free_gameport(struct es1968 *chip) { }
2460 #endif
2461
2462 #ifdef CONFIG_SND_ES1968_INPUT
2463 static int snd_es1968_input_register(struct es1968 *chip)
2464 {
2465 struct input_dev *input_dev;
2466 int err;
2467
2468 input_dev = devm_input_allocate_device(&chip->pci->dev);
2469 if (!input_dev)
2470 return -ENOMEM;
2471
2472 snprintf(chip->phys, sizeof(chip->phys), "pci-%s/input0",
2473 pci_name(chip->pci));
2474
2475 input_dev->name = chip->card->driver;
2476 input_dev->phys = chip->phys;
2477 input_dev->id.bustype = BUS_PCI;
2478 input_dev->id.vendor = chip->pci->vendor;
2479 input_dev->id.product = chip->pci->device;
2480 input_dev->dev.parent = &chip->pci->dev;
2481
2482 __set_bit(EV_KEY, input_dev->evbit);
2483 __set_bit(KEY_MUTE, input_dev->keybit);
2484 __set_bit(KEY_VOLUMEDOWN, input_dev->keybit);
2485 __set_bit(KEY_VOLUMEUP, input_dev->keybit);
2486
2487 err = input_register_device(input_dev);
2488 if (err)
2489 return err;
2490
2491 chip->input_dev = input_dev;
2492 return 0;
2493 }
2494 #endif /* CONFIG_SND_ES1968_INPUT */
2495
2496 #ifdef CONFIG_SND_ES1968_RADIO
2497 #define GPIO_DATA 0x60
2498 #define IO_MASK 4 /* mask register offset from GPIO_DATA
2499 bits 1=unmask write to given bit */
2500 #define IO_DIR 8 /* direction register offset from GPIO_DATA
2501 bits 0/1=read/write direction */
2502
2503 /* GPIO to TEA575x maps */
2504 struct snd_es1968_tea575x_gpio {
2505 u8 data, clk, wren, most;
2506 char *name;
2507 };
2508
2509 static const struct snd_es1968_tea575x_gpio snd_es1968_tea575x_gpios[] = {
2510 { .data = 6, .clk = 7, .wren = 8, .most = 9, .name = "SF64-PCE2" },
2511 { .data = 7, .clk = 8, .wren = 6, .most = 10, .name = "M56VAP" },
2512 };
2513
2514 #define get_tea575x_gpio(chip) \
2515 (&snd_es1968_tea575x_gpios[(chip)->tea575x_tuner])
2516
2517
2518 static void snd_es1968_tea575x_set_pins(struct snd_tea575x *tea, u8 pins)
2519 {
2520 struct es1968 *chip = tea->private_data;
2521 struct snd_es1968_tea575x_gpio gpio = *get_tea575x_gpio(chip);
2522 u16 val = 0;
2523
2524 val |= (pins & TEA575X_DATA) ? (1 << gpio.data) : 0;
2525 val |= (pins & TEA575X_CLK) ? (1 << gpio.clk) : 0;
2526 val |= (pins & TEA575X_WREN) ? (1 << gpio.wren) : 0;
2527
2528 outw(val, chip->io_port + GPIO_DATA);
2529 }
2530
2531 static u8 snd_es1968_tea575x_get_pins(struct snd_tea575x *tea)
2532 {
2533 struct es1968 *chip = tea->private_data;
2534 struct snd_es1968_tea575x_gpio gpio = *get_tea575x_gpio(chip);
2535 u16 val = inw(chip->io_port + GPIO_DATA);
2536 u8 ret = 0;
2537
2538 if (val & (1 << gpio.data))
2539 ret |= TEA575X_DATA;
2540 if (val & (1 << gpio.most))
2541 ret |= TEA575X_MOST;
2542
2543 return ret;
2544 }
2545
2546 static void snd_es1968_tea575x_set_direction(struct snd_tea575x *tea, bool output)
2547 {
2548 struct es1968 *chip = tea->private_data;
2549 unsigned long io = chip->io_port + GPIO_DATA;
2550 u16 odir = inw(io + IO_DIR);
2551 struct snd_es1968_tea575x_gpio gpio = *get_tea575x_gpio(chip);
2552
2553 if (output) {
2554 outw(~((1 << gpio.data) | (1 << gpio.clk) | (1 << gpio.wren)),
2555 io + IO_MASK);
2556 outw(odir | (1 << gpio.data) | (1 << gpio.clk) | (1 << gpio.wren),
2557 io + IO_DIR);
2558 } else {
2559 outw(~((1 << gpio.clk) | (1 << gpio.wren) | (1 << gpio.data) | (1 << gpio.most)),
2560 io + IO_MASK);
2561 outw((odir & ~((1 << gpio.data) | (1 << gpio.most)))
2562 | (1 << gpio.clk) | (1 << gpio.wren), io + IO_DIR);
2563 }
2564 }
2565
2566 static const struct snd_tea575x_ops snd_es1968_tea_ops = {
2567 .set_pins = snd_es1968_tea575x_set_pins,
2568 .get_pins = snd_es1968_tea575x_get_pins,
2569 .set_direction = snd_es1968_tea575x_set_direction,
2570 };
2571 #endif
2572
2573 static void snd_es1968_free(struct snd_card *card)
2574 {
2575 struct es1968 *chip = card->private_data;
2576
2577 cancel_work_sync(&chip->hwvol_work);
2578
2579 if (chip->io_port) {
2580 outw(1, chip->io_port + 0x04); /* clear WP interrupts */
2581 outw(0, chip->io_port + ESM_PORT_HOST_IRQ); /* disable IRQ */
2582 }
2583
2584 #ifdef CONFIG_SND_ES1968_RADIO
2585 snd_tea575x_exit(&chip->tea);
2586 v4l2_device_unregister(&chip->v4l2_dev);
2587 #endif
2588
2589 snd_es1968_free_gameport(chip);
2590 }
2591
2592 struct ess_device_list {
2593 unsigned short type; /* chip type */
2594 unsigned short vendor; /* subsystem vendor id */
2595 };
2596
2597 static const struct ess_device_list pm_allowlist[] = {
2598 { TYPE_MAESTRO2E, 0x0e11 }, /* Compaq Armada */
2599 { TYPE_MAESTRO2E, 0x1028 },
2600 { TYPE_MAESTRO2E, 0x103c },
2601 { TYPE_MAESTRO2E, 0x1179 },
2602 { TYPE_MAESTRO2E, 0x14c0 }, /* HP omnibook 4150 */
2603 { TYPE_MAESTRO2E, 0x1558 },
2604 { TYPE_MAESTRO2E, 0x125d }, /* a PCI card, e.g. Terratec DMX */
2605 { TYPE_MAESTRO2, 0x125d }, /* a PCI card, e.g. SF64-PCE2 */
2606 };
2607
2608 static const struct ess_device_list mpu_denylist[] = {
2609 { TYPE_MAESTRO2, 0x125d },
2610 };
2611
2612 static int snd_es1968_create(struct snd_card *card,
2613 struct pci_dev *pci,
2614 int total_bufsize,
2615 int play_streams,
2616 int capt_streams,
2617 int chip_type,
2618 int do_pm,
2619 int radio_nr)
2620 {
2621 struct es1968 *chip = card->private_data;
2622 int i, err;
2623
2624 /* enable PCI device */
2625 err = pcim_enable_device(pci);
2626 if (err < 0)
2627 return err;
2628 /* check, if we can restrict PCI DMA transfers to 28 bits */
2629 if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(28))) {
2630 dev_err(card->dev,
2631 "architecture does not support 28bit PCI busmaster DMA\n");
2632 return -ENXIO;
2633 }
2634
2635 /* Set Vars */
2636 chip->type = chip_type;
2637 spin_lock_init(&chip->reg_lock);
2638 spin_lock_init(&chip->substream_lock);
2639 INIT_LIST_HEAD(&chip->buf_list);
2640 INIT_LIST_HEAD(&chip->substream_list);
2641 mutex_init(&chip->memory_mutex);
2642 INIT_WORK(&chip->hwvol_work, es1968_update_hw_volume);
2643 chip->card = card;
2644 chip->pci = pci;
2645 chip->irq = -1;
2646 chip->total_bufsize = total_bufsize; /* in bytes */
2647 chip->playback_streams = play_streams;
2648 chip->capture_streams = capt_streams;
2649
2650 err = pci_request_regions(pci, "ESS Maestro");
2651 if (err < 0)
2652 return err;
2653 chip->io_port = pci_resource_start(pci, 0);
2654 if (devm_request_irq(&pci->dev, pci->irq, snd_es1968_interrupt,
2655 IRQF_SHARED, KBUILD_MODNAME, chip)) {
2656 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
2657 return -EBUSY;
2658 }
2659 chip->irq = pci->irq;
2660 card->sync_irq = chip->irq;
2661 card->private_free = snd_es1968_free;
2662
2663 /* Clear Maestro_map */
2664 for (i = 0; i < 32; i++)
2665 chip->maestro_map[i] = 0;
2666
2667 /* Clear Apu Map */
2668 for (i = 0; i < NR_APUS; i++)
2669 chip->apu[i] = ESM_APU_FREE;
2670
2671 /* just to be sure */
2672 pci_set_master(pci);
2673
2674 if (do_pm > 1) {
2675 /* disable power-management if not on the allowlist */
2676 unsigned short vend;
2677 pci_read_config_word(chip->pci, PCI_SUBSYSTEM_VENDOR_ID, &vend);
2678 for (i = 0; i < (int)ARRAY_SIZE(pm_allowlist); i++) {
2679 if (chip->type == pm_allowlist[i].type &&
2680 vend == pm_allowlist[i].vendor) {
2681 do_pm = 1;
2682 break;
2683 }
2684 }
2685 if (do_pm > 1) {
2686 /* not matched; disabling pm */
2687 dev_info(card->dev, "not attempting power management.\n");
2688 do_pm = 0;
2689 }
2690 }
2691 chip->do_pm = do_pm;
2692
2693 snd_es1968_chip_init(chip);
2694
2695 #ifdef CONFIG_SND_ES1968_RADIO
2696 /* don't play with GPIOs on laptops */
2697 if (chip->pci->subsystem_vendor != 0x125d)
2698 return 0;
2699 err = v4l2_device_register(&pci->dev, &chip->v4l2_dev);
2700 if (err < 0)
2701 return err;
2702 chip->tea.v4l2_dev = &chip->v4l2_dev;
2703 chip->tea.private_data = chip;
2704 chip->tea.radio_nr = radio_nr;
2705 chip->tea.ops = &snd_es1968_tea_ops;
2706 sprintf(chip->tea.bus_info, "PCI:%s", pci_name(pci));
2707 for (i = 0; i < ARRAY_SIZE(snd_es1968_tea575x_gpios); i++) {
2708 chip->tea575x_tuner = i;
2709 if (!snd_tea575x_init(&chip->tea, THIS_MODULE)) {
2710 dev_info(card->dev, "detected TEA575x radio type %s\n",
2711 get_tea575x_gpio(chip)->name);
2712 strscpy(chip->tea.card, get_tea575x_gpio(chip)->name,
2713 sizeof(chip->tea.card));
2714 break;
2715 }
2716 }
2717 #endif
2718 return 0;
2719 }
2720
2721
2722 /*
2723 */
2724 static int __snd_es1968_probe(struct pci_dev *pci,
2725 const struct pci_device_id *pci_id)
2726 {
2727 static int dev;
2728 struct snd_card *card;
2729 struct es1968 *chip;
2730 unsigned int i;
2731 int err;
2732
2733 if (dev >= SNDRV_CARDS)
2734 return -ENODEV;
2735 if (!enable[dev]) {
2736 dev++;
2737 return -ENOENT;
2738 }
2739
2740 err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
2741 sizeof(*chip), &card);
2742 if (err < 0)
2743 return err;
2744 chip = card->private_data;
2745
2746 if (total_bufsize[dev] < 128)
2747 total_bufsize[dev] = 128;
2748 if (total_bufsize[dev] > 4096)
2749 total_bufsize[dev] = 4096;
2750 err = snd_es1968_create(card, pci,
2751 total_bufsize[dev] * 1024, /* in bytes */
2752 pcm_substreams_p[dev],
2753 pcm_substreams_c[dev],
2754 pci_id->driver_data,
2755 use_pm[dev],
2756 radio_nr[dev]);
2757 if (err < 0)
2758 return err;
2759
2760 switch (chip->type) {
2761 case TYPE_MAESTRO2E:
2762 strcpy(card->driver, "ES1978");
2763 strcpy(card->shortname, "ESS ES1978 (Maestro 2E)");
2764 break;
2765 case TYPE_MAESTRO2:
2766 strcpy(card->driver, "ES1968");
2767 strcpy(card->shortname, "ESS ES1968 (Maestro 2)");
2768 break;
2769 case TYPE_MAESTRO:
2770 strcpy(card->driver, "ESM1");
2771 strcpy(card->shortname, "ESS Maestro 1");
2772 break;
2773 }
2774
2775 err = snd_es1968_pcm(chip, 0);
2776 if (err < 0)
2777 return err;
2778
2779 err = snd_es1968_mixer(chip);
2780 if (err < 0)
2781 return err;
2782
2783 if (enable_mpu[dev] == 2) {
2784 /* check the deny list */
2785 unsigned short vend;
2786 pci_read_config_word(chip->pci, PCI_SUBSYSTEM_VENDOR_ID, &vend);
2787 for (i = 0; i < ARRAY_SIZE(mpu_denylist); i++) {
2788 if (chip->type == mpu_denylist[i].type &&
2789 vend == mpu_denylist[i].vendor) {
2790 enable_mpu[dev] = 0;
2791 break;
2792 }
2793 }
2794 }
2795 if (enable_mpu[dev]) {
2796 err = snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401,
2797 chip->io_port + ESM_MPU401_PORT,
2798 MPU401_INFO_INTEGRATED |
2799 MPU401_INFO_IRQ_HOOK,
2800 -1, &chip->rmidi);
2801 if (err < 0)
2802 dev_warn(card->dev, "skipping MPU-401 MIDI support..\n");
2803 }
2804
2805 snd_es1968_create_gameport(chip, dev);
2806
2807 #ifdef CONFIG_SND_ES1968_INPUT
2808 err = snd_es1968_input_register(chip);
2809 if (err)
2810 dev_warn(card->dev,
2811 "Input device registration failed with error %i", err);
2812 #endif
2813
2814 snd_es1968_start_irq(chip);
2815
2816 chip->clock = clock[dev];
2817 if (! chip->clock)
2818 es1968_measure_clock(chip);
2819
2820 sprintf(card->longname, "%s at 0x%lx, irq %i",
2821 card->shortname, chip->io_port, chip->irq);
2822
2823 err = snd_card_register(card);
2824 if (err < 0)
2825 return err;
2826 pci_set_drvdata(pci, card);
2827 dev++;
2828 return 0;
2829 }
2830
2831 static int snd_es1968_probe(struct pci_dev *pci,
2832 const struct pci_device_id *pci_id)
2833 {
2834 return snd_card_free_on_error(&pci->dev, __snd_es1968_probe(pci, pci_id));
2835 }
2836
2837 static struct pci_driver es1968_driver = {
2838 .name = KBUILD_MODNAME,
2839 .id_table = snd_es1968_ids,
2840 .probe = snd_es1968_probe,
2841 .driver = {
2842 .pm = &es1968_pm,
2843 },
2844 };
2845
2846 module_pci_driver(es1968_driver);
2847
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